[
  {
    "id": "$substrCP baseline",
    "operator": "$substrCP",
    "kind": "baseline",
    "operand": "all",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        3
      ]
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": \"ell\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"ell\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$substrCP input[0]: null",
    "operator": "$substrCP",
    "kind": "null",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": null
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "bson": "{\"v\": \"\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP input[0]: missing",
    "operator": "$substrCP",
    "kind": "missing",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "bson": "{\"v\": \"\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP input[0]: zero",
    "operator": "$substrCP",
    "kind": "zero",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": 0
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "bson": "{\"v\": \"\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP input[0]: negative",
    "operator": "$substrCP",
    "kind": "negative",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": -2
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "bson": "{\"v\": \"2\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP input[0]: decimal",
    "operator": "$substrCP",
    "kind": "decimal",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": 2.5
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "bson": "{\"v\": \".5\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP input[0]: numeric string",
    "operator": "$substrCP",
    "kind": "numeric string",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": "12"
    },
    "srotax": {
      "bson": "{\"v\": \"2\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"2\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$substrCP input[0]: text",
    "operator": "$substrCP",
    "kind": "text",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": "hello"
    },
    "srotax": {
      "bson": "{\"v\": \"ell\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"ell\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$substrCP input[0]: empty string",
    "operator": "$substrCP",
    "kind": "empty string",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": ""
    },
    "srotax": {
      "bson": "{\"v\": \"\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$substrCP input[0]: boolean",
    "operator": "$substrCP",
    "kind": "boolean",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": true
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: can't convert from BSON type bool to String",
      "code": 16007,
      "error": "Location16007"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP input[0]: false",
    "operator": "$substrCP",
    "kind": "false",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": false
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: can't convert from BSON type bool to String",
      "code": 16007,
      "error": "Location16007"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP input[0]: typed date",
    "operator": "$substrCP",
    "kind": "typed date",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": {
        "$date": "2026-01-15T15:00:00Z"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "bson": "{\"v\": \"026\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP input[0]: decimal128",
    "operator": "$substrCP",
    "kind": "decimal128",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": {
        "$numberDecimal": "1.25"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "bson": "{\"v\": \".25\"}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP input[0]: empty array",
    "operator": "$substrCP",
    "kind": "empty array",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": []
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: can't convert from BSON type array to String",
      "code": 16007,
      "error": "Location16007"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP input[0]: numeric array",
    "operator": "$substrCP",
    "kind": "numeric array",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": [
        1,
        2,
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: can't convert from BSON type array to String",
      "code": 16007,
      "error": "Location16007"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP input[0]: mixed array",
    "operator": "$substrCP",
    "kind": "mixed array",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": [
        1,
        null,
        "x",
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: can't convert from BSON type array to String",
      "code": 16007,
      "error": "Location16007"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP input[0]: nested array",
    "operator": "$substrCP",
    "kind": "nested array",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": [
        [
          1,
          2
        ],
        [
          3
        ]
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: can't convert from BSON type array to String",
      "code": 16007,
      "error": "Location16007"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP input[0]: empty object",
    "operator": "$substrCP",
    "kind": "empty object",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": {}
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: can't convert from BSON type object to String",
      "code": 16007,
      "error": "Location16007"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP input[0]: object",
    "operator": "$substrCP",
    "kind": "object",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": {
        "x": 1
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: can't convert from BSON type object to String",
      "code": 16007,
      "error": "Location16007"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP input[0]: ISO date string",
    "operator": "$substrCP",
    "kind": "ISO date string",
    "operand": "input[0]",
    "expression": {
      "$substrCP": [
        "$probe",
        1,
        3
      ]
    },
    "input": {
      "probe": "2026-01-15T15:00:00Z"
    },
    "srotax": {
      "bson": "{\"v\": \"026\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"026\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$substrCP start[1]: null",
    "operator": "$substrCP",
    "kind": "null",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": null
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type null)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: missing",
    "operator": "$substrCP",
    "kind": "missing",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type missing)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: zero",
    "operator": "$substrCP",
    "kind": "zero",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": 0
    },
    "srotax": {
      "bson": "{\"v\": \"hel\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"hel\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$substrCP start[1]: negative",
    "operator": "$substrCP",
    "kind": "negative",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": -2
    },
    "srotax": {
      "bson": "{\"v\": \"\"}",
      "present": true
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: the starting index must be nonnegative integer.",
      "code": 34455,
      "error": "Location34455"
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP start[1]: decimal",
    "operator": "$substrCP",
    "kind": "decimal",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": 2.5
    },
    "srotax": {
      "bson": "{\"v\": \"llo\"}",
      "present": true
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index cannot be represented as a 32-bit integral value: 2.5",
      "code": 34451,
      "error": "Location34451"
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP start[1]: numeric string",
    "operator": "$substrCP",
    "kind": "numeric string",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": "12"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type string)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: text",
    "operator": "$substrCP",
    "kind": "text",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": "hello"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type string)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: empty string",
    "operator": "$substrCP",
    "kind": "empty string",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": ""
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type string)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: boolean",
    "operator": "$substrCP",
    "kind": "boolean",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": true
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type bool)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: false",
    "operator": "$substrCP",
    "kind": "false",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": false
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type bool)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: typed date",
    "operator": "$substrCP",
    "kind": "typed date",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": {
        "$date": "2026-01-15T15:00:00Z"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type date)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: decimal128",
    "operator": "$substrCP",
    "kind": "decimal128",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": {
        "$numberDecimal": "1.25"
      }
    },
    "srotax": {
      "bson": "{\"v\": \"ell\"}",
      "present": true
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index cannot be represented as a 32-bit integral value: 1.25",
      "code": 34451,
      "error": "Location34451"
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP start[1]: empty array",
    "operator": "$substrCP",
    "kind": "empty array",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": []
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type array)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: numeric array",
    "operator": "$substrCP",
    "kind": "numeric array",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": [
        1,
        2,
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type array)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: mixed array",
    "operator": "$substrCP",
    "kind": "mixed array",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": [
        1,
        null,
        "x",
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type array)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: nested array",
    "operator": "$substrCP",
    "kind": "nested array",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": [
        [
          1,
          2
        ],
        [
          3
        ]
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type array)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: empty object",
    "operator": "$substrCP",
    "kind": "empty object",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": {}
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type object)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: object",
    "operator": "$substrCP",
    "kind": "object",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": {
        "x": 1
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type object)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP start[1]: ISO date string",
    "operator": "$substrCP",
    "kind": "ISO date string",
    "operand": "start[1]",
    "expression": {
      "$substrCP": [
        "hello",
        "$probe",
        3
      ]
    },
    "input": {
      "probe": "2026-01-15T15:00:00Z"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: starting index must be a numeric type (is BSON type string)",
      "code": 34450,
      "error": "Location34450"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: null",
    "operator": "$substrCP",
    "kind": "null",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": null
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type null)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: missing",
    "operator": "$substrCP",
    "kind": "missing",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type missing)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: zero",
    "operator": "$substrCP",
    "kind": "zero",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": 0
    },
    "srotax": {
      "bson": "{\"v\": \"\"}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": \"\"}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$substrCP length[2]: negative",
    "operator": "$substrCP",
    "kind": "negative",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": -2
    },
    "srotax": {
      "bson": "{\"v\": \"\"}",
      "present": true
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a nonnegative integer.",
      "code": 34454,
      "error": "Location34454"
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP length[2]: decimal",
    "operator": "$substrCP",
    "kind": "decimal",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": 2.5
    },
    "srotax": {
      "bson": "{\"v\": \"el\"}",
      "present": true
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length cannot be represented as a 32-bit integral value: 2.5",
      "code": 34453,
      "error": "Location34453"
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP length[2]: numeric string",
    "operator": "$substrCP",
    "kind": "numeric string",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": "12"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type string)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: text",
    "operator": "$substrCP",
    "kind": "text",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": "hello"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type string)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: empty string",
    "operator": "$substrCP",
    "kind": "empty string",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": ""
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type string)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: boolean",
    "operator": "$substrCP",
    "kind": "boolean",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": true
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type bool)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: false",
    "operator": "$substrCP",
    "kind": "false",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": false
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type bool)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: typed date",
    "operator": "$substrCP",
    "kind": "typed date",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": {
        "$date": "2026-01-15T15:00:00Z"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type date)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: decimal128",
    "operator": "$substrCP",
    "kind": "decimal128",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": {
        "$numberDecimal": "1.25"
      }
    },
    "srotax": {
      "bson": "{\"v\": \"e\"}",
      "present": true
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length cannot be represented as a 32-bit integral value: 1.25",
      "code": 34453,
      "error": "Location34453"
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$substrCP length[2]: empty array",
    "operator": "$substrCP",
    "kind": "empty array",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": []
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type array)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: numeric array",
    "operator": "$substrCP",
    "kind": "numeric array",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": [
        1,
        2,
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type array)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: mixed array",
    "operator": "$substrCP",
    "kind": "mixed array",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": [
        1,
        null,
        "x",
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type array)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: nested array",
    "operator": "$substrCP",
    "kind": "nested array",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": [
        [
          1,
          2
        ],
        [
          3
        ]
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type array)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: empty object",
    "operator": "$substrCP",
    "kind": "empty object",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": {}
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type object)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: object",
    "operator": "$substrCP",
    "kind": "object",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": {
        "x": 1
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type object)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP length[2]: ISO date string",
    "operator": "$substrCP",
    "kind": "ISO date string",
    "operand": "length[2]",
    "expression": {
      "$substrCP": [
        "hello",
        1,
        "$probe"
      ]
    },
    "input": {
      "probe": "2026-01-15T15:00:00Z"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP expects (string, int, int)"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $substrCP: length must be a numeric type (is BSON type string)",
      "code": 34452,
      "error": "Location34452"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP empty arguments",
    "operator": "$substrCP",
    "kind": "empty arguments",
    "operand": "all",
    "expression": {
      "$substrCP": []
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP requires [string, start, length]"
    },
    "mongo": {
      "message": "Invalid $project :: caused by :: Expression $substrCP takes exactly 3 arguments. 0 were passed in.",
      "code": 16020,
      "error": "Location16020"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$substrCP unknown option",
    "operator": "$substrCP",
    "kind": "unknown option",
    "operand": "all",
    "expression": {
      "$substrCP": {
        "unexpected": 1
      }
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$substrCP requires [string, start, length]"
    },
    "mongo": {
      "message": "Invalid $project :: caused by :: Expression $substrCP takes exactly 3 arguments. 1 were passed in.",
      "code": 16020,
      "error": "Location16020"
    },
    "status": "BOTH_REJECTED"
  }
]