curl --request GET \
  --url https://api.sandbox.paypathiq.com/v1/clients/{clientCode}/batches/{externalBatchId} \
  --header 'Authorization: Bearer <token>'

{
  "externalBatchId": "BATCH_2026_10_15",
  "status": "partially_succeeded",
  "bookCompleteness": "not_declared",
  "submittedAt": "2026-10-15T02:00:00.000Z",
  "completedAt": "2026-10-15T02:00:07.000Z",
  "counts": {
    "total": 3,
    "pending": 0,
    "succeeded": 1,
    "failed": 1,
    "dependencyFailed": 1
  },
  "records": [
    {
      "position": 1,
      "recordId": "r1",
      "kind": "customer",
      "externalId": "CUS_123",
      "status": "succeeded",
      "httpStatus": 201
    },
    {
      "position": 2,
      "recordId": "r2",
      "kind": "receivable",
      "externalId": "REC_123",
      "status": "failed",
      "httpStatus": 422,
      "problem": {
        "type": "profile_mismatch"
      }
    },
    {
      "position": 3,
      "recordId": "r3",
      "kind": "payment_observation",
      "externalId": "PAY_123",
      "status": "dependency_failed",
      "blockedBy": "r2"
    }
  ]
}

{
  "detail": "API key is invalid, inactive, revoked, or for another environment.",
  "requestId": "29400000-0000-4000-8000-000000000001",
  "status": 401,
  "title": "API key is invalid, inactive, revoked, or for another environment.",
  "type": "https://docs.paypathiq.com/problems/invalid_api_key"
}

{
  "detail": "The Client code is unknown, the grant lacks the required scope, or the calling address is outside the grant's IP allowlist.",
  "requestId": "29400000-0000-4000-8000-000000000001",
  "status": 403,
  "title": "The Client code is unknown, the grant lacks the required scope, or the calling address is outside the grant's IP allowlist.",
  "type": "https://docs.paypathiq.com/problems/client_scope_denied"
}

{
  "detail": "No batch exists at this authorized resource URL.",
  "requestId": "29400000-0000-4000-8000-000000000001",
  "status": 404,
  "title": "No batch exists at this authorized resource URL.",
  "type": "https://docs.paypathiq.com/problems/batch_not_found"
}

{
  "detail": "Route parameters or the representation are invalid. Route parameters are checked before authentication. Field errors carry a code such as invalid_format, unrecognized_keys, custom, sensitive_external_id, or sensitive_source_reference.",
  "errors": [
    {
      "code": "invalid_format",
      "detail": "Invalid ISO date",
      "pointer": "/dueDate"
    }
  ],
  "requestId": "29400000-0000-4000-8000-000000000001",
  "status": 422,
  "title": "Route parameters or the representation are invalid. Route parameters are checked before authentication. Field errors carry a code such as invalid_format, unrecognized_keys, custom, sensitive_external_id, or sensitive_source_reference.",
  "type": "https://docs.paypathiq.com/problems/validation_error"
}

{
  "detail": "Each API key may send 60 requests per minute and run 1 request at a time. In sandbox, the same limits also apply per Client across all of its keys. Every request, including GET, counts.",
  "requestId": "29400000-0000-4000-8000-000000000001",
  "status": 429,
  "title": "Each API key may send 60 requests per minute and run 1 request at a time. In sandbox, the same limits also apply per Client across all of its keys. Every request, including GET, counts.",
  "type": "https://docs.paypathiq.com/problems/rate_limit_exceeded"
}

{
  "detail": "An unexpected error prevented a safe commit, and nothing was saved. Retry with backoff.",
  "requestId": "29400000-0000-4000-8000-000000000001",
  "status": 503,
  "title": "An unexpected error prevented a safe commit, and nothing was saved. Retry with backoff.",
  "type": "https://docs.paypathiq.com/problems/projection_unavailable"
}