> ## Documentation Index > Fetch the complete documentation index at: https://docs.lerian.studio/llms.txt > Use this file to discover all available pages before exploring further. # Get a settlement operation > Returns the full detail of one settlement operation, including its recorded eslcErrors and recoverability diagnostics. ## OpenAPI ````yaml en/openapi/v3-current/slc.yaml get /v1/operations/{operationId} openapi: 3.1.0 info: description: >- API for Lerian SLC — the participant-side rail that connects the institution to Núclea's SLC deferred-net card settlement. It covers settlement-operation intake and lifecycle, clearing positions, the participant and arrangement registry, generated reports, embedded XSD schema introspection, transmission recovery and connectivity to Núclea, BYOK Model-A signing-key import, and tenant-scoped webhooks. title: Lerian SLC API version: 1.0.0 servers: - url: https://slc.sandbox.lerian.net security: - BearerAuth: [] tags: - description: >- Settlement operation lifecycle — create, list, query, and control the NUliquid-tracked card operations (NUliquid = the 21-position id Núclea assigns each accepted operation) through the state machine. name: Operations - description: >- Participant catalog — the acquirers, sub-acquirers, IF Domicílio (bank where the merchant receives its sales), and settlement FIs (financial institutions) that take part in card settlement. name: Participants - description: >- Card arrangements (bandeira/scheme configurations, e.g. Visa/Master/Elo) attached to a participant. name: Arrangements - description: >- Regulated transport orchestration to Núclea/SILOC (the private card clearing house that operates the SILOC settlement system) — dispatch, recovery, retransmission, and connectivity testing over managed file-transfer, message-broker, and REST. name: Connectivity - description: >- Multilateral netting clearing positions — the net amount each participant settles per STR cycle (STR = Banco Central reserves-transfer system). name: Clearing - description: >- SaaS BYOK (Bring Your Own Key) signing-key provisioning — import parameters and register the client's ICP-Brasil A1 (Brazilian PKI server certificate, 1-year validity) certificate material used to sign ASLC files; the private key never leaves the client's HSM/KMS/Vault. name: SigningKey - description: >- ASLC file intake and status — passthrough submission and processing status of the official Núclea card-settlement XML files (ASLC = Arquivo do Sistema de Liquidação de Cartões). name: Files - description: >- Read-only introspection of the embedded Núclea ASLC/RSFN (National Financial System Network) XSD schemas used to validate outbound and inbound messages. name: XSD Schemas - description: Read-only regulatory, compliance, and operational settlement reports. name: Reports - description: >- Outbound business-event webhook subscriptions and delivery management for consumers (Midaz, client ledgers, Cabine — all optional). name: Webhooks - description: >- Administrative operations — hot-reloadable runtime configuration, dead-letter-queue inspection/replay, and outbox redispatch. name: Admin paths: /v1/operations/{operationId}: get: tags: - Operations summary: Get a settlement operation description: >- Returns the full detail of one settlement operation, including its recorded eslcErrors and recoverability diagnostics. operationId: getOperation parameters: - description: Settlement operation id (UUID). in: path name: operationId required: true schema: description: Settlement operation id (UUID). examples: - 018f8a3e-4b2c-7c1a-9e5d-2f6a1b3c4d5e type: string responses: '200': content: application/json: schema: $ref: '#/components/schemas/OperationDetailResponse' description: OK '501': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: >- Not Implemented: this capability is not part of this deployment. Operations are registered unconditionally so the published contract is identical across deploy shapes; when the capability behind one did not compose here (authentication disabled, no database, no outbound transport, or the feature switched off) it answers this coded SLC-0012 problem. It is definitive for this deployment: retrying does not help, and the `detail` is deliberately scrubbed (any status >= 500 is). default: content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Error components: schemas: OperationDetailResponse: additionalProperties: false properties: arrangementCode: description: Payment arrangement (arranjo) code. examples: - '0245' type: string aslcType: description: ASLC message type materialized for this operation. examples: - ASLC027 type: string batchId: description: Batch id when created via the NDJSON batch endpoint. examples: - 018f8a3e-4b2c-7c1a-9e5d-2f6a1b3c4d5e type: string cancellationTargetOperationId: description: >- Id (UUID) of the operation a CANCELLATION targets; null for every other type. examples: - 018f8a3e-4b2c-7c1a-9e5d-2f6a1b3c4d5e type: - string - 'null' createdAt: description: Creation timestamp (RFC3339). examples: - '2026-06-15T10:50:00Z' type: string creditorIspb: description: Creditor (acquirer) ISPB, 8 digits. examples: - '29011780' type: string currency: description: ISO 4217 currency code. examples: - BRL type: string domicileIfIspb: description: Domicile FI ISPB (bank where the merchant receives funds), 8 digits. examples: - '60701190' type: string dueDate: description: Settlement due date (RFC3339); null when not set. examples: - '2026-06-15T00:00:00Z' type: - string - 'null' eslcErrors: description: Recorded Núclea business error codes (empty array when none). items: type: string type: - array - 'null' externalId: description: Client-side external identifier. examples: - acq-ext-2026-06-0001 type: string id: description: Operation id (UUID). examples: - 018f8a3e-4b2c-7c1a-9e5d-2f6a1b3c4d5e type: string installmentNumber: description: This installment's sequence number. examples: - 1 format: int32 type: integer installments: description: Total number of installments. examples: - 3 format: int32 type: integer intakeMode: description: Intake mode the operation was received through. examples: - api_jsonl type: string lastError: description: Most recent recorded Núclea business error code; null when none. examples: - ESLC0029 type: - string - 'null' nuliquid: description: Núclea-assigned NUliquid (21 positions); null until assigned. examples: - '202606150000000000001' type: - string - 'null' operationType: description: Operation type. examples: - CREDIT type: string participantId: description: Owning participant id (UUID). examples: - 018f8a3e-4b2c-7c1a-9e5d-2f6a1b3c4d5e type: string participantRole: description: Participant role in the settlement. examples: - ACQUIRER type: string reasonCategory: description: >- Numeric MotvCanc cancellation reason ('1'..'4'); null unless a CANCELLATION. examples: - '4' type: - string - 'null' settlementIfIspb: description: Settlement FI ISPB, 8 digits; null when not set. examples: - '60746948' type: - string - 'null' state: description: Lifecycle state. examples: - SETTLED type: string stuckSince: description: >- Timestamp since the operation has been internally stuck (RFC3339); null when not stuck. examples: - '2026-06-15T11:00:00Z' type: - string - 'null' transactionDate: description: Business transaction date (RFC3339). examples: - '2026-06-15T00:00:00Z' type: string updatedAt: description: Last-update timestamp (RFC3339). examples: - '2026-06-15T13:10:00Z' type: string value: description: Operation amount in minor units (centavos). examples: - 150000 format: int64 type: integer waitingFor: description: >- What the operation is waiting on, and therefore which recovery verb applies. transport/nuclea_ack/if_confirmation are external waits (reconcile or wait). parked means an outbound transmit claim is held because the attempt budget was exhausted and nothing reached Núclea: recover with POST /v1/connectivity/unpark. in_flight means the file IS at Núclea and the local transition failed: reconcile with Núclea, then POST /v1/operations/{operationId}/advance, and NEVER un-park it. null names NO verb: it means no external dependency is named for this state — the operation is terminal, or the wait is internal (CREATED/ACCEPTED, where advance/requeue applies), or it awaits a counterpart this vocabulary does not name yet (CONFIRMED awaits the funding ack plus the Núclea cycle close; SETTLED awaits the D+1 return file). Pair a null with state before choosing an action. enum: - transport - nuclea_ack - if_confirmation - parked - in_flight - null examples: - nuclea_ack type: - string - 'null' required: - id - externalId - operationType - state - participantId - participantRole - settlementIfIspb - value - currency - installments - installmentNumber - dueDate - transactionDate - nuliquid - intakeMode - eslcErrors - reasonCategory - cancellationTargetOperationId - createdAt - updatedAt - waitingFor - stuckSince - lastError type: object Detail: additionalProperties: false properties: code: description: >- Stable, machine-readable domain error code scoped to the emitting service (format: -NNNN). examples: - ERR-0001 type: string detail: description: >- A human-readable explanation specific to this occurrence of the problem. examples: - Property foo is required but is missing. type: string errors: description: Optional list of individual error details items: $ref: '#/components/schemas/ErrorDetail' type: - array - 'null' instance: description: >- A URI reference that identifies the specific occurrence of the problem. examples: - https://example.com/error-log/abc123 format: uri type: string status: description: HTTP status code examples: - 400 format: int64 type: integer title: description: >- A short, human-readable summary of the problem type. This value should not change between occurrences of the error. examples: - Bad Request type: string type: default: about:blank description: A URI reference to human-readable documentation for the error. examples: - https://example.com/errors/example format: uri type: string type: object ErrorDetail: additionalProperties: false properties: location: description: >- Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id' type: string message: description: Error message text type: string value: description: The value at the given location type: object securitySchemes: BearerAuth: bearerFormat: JWT description: JWT bearer token issued by the identity provider. scheme: bearer type: http ````