> ## 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. # Ask the câmara for its LDL schedule grid > Issues an LDL0023 "IF consulta Horários Câmara LDL" to the SILOC câmara on product OT (Catálogo de Serviços do SFN v5.13, Vol II). The request is minted, built, signed, encrypted and durably recorded before anything reaches the queue: this returns 202 with the control number the câmara will echo, and the answer (LDL0023R1) arrives asynchronously — read it back with getScheduleQuery. A deployment with no send leg configured answers 503. ## OpenAPI ````yaml /pt/openapi/v3-current/siloc.yaml post /api/v1/siloc/outbound/schedule-queries openapi: 3.1.0 info: description: >- OpenAPI 3.1 surface for Lerian SILOC, the participant-side rail connecting the institution to Núclea's SILOC deferred-net interbank settlement. title: Lerian SILOC API version: 1.0.0 servers: - url: https://siloc.sandbox.lerian.net security: [] paths: /api/v1/siloc/outbound/schedule-queries: post: tags: - Schedule summary: Ask the câmara for its LDL schedule grid description: >- Issues an LDL0023 "IF consulta Horários Câmara LDL" to the SILOC câmara on product OT (Catálogo de Serviços do SFN v5.13, Vol II). The request is minted, built, signed, encrypted and durably recorded before anything reaches the queue: this returns 202 with the control number the câmara will echo, and the answer (LDL0023R1) arrives asynchronously — read it back with getScheduleQuery. A deployment with no send leg configured answers 503. operationId: submitScheduleQuery parameters: - description: >- Idempotency key for this state-changing request (required, max 255 characters). in: header name: X-Idempotency required: true schema: description: >- Idempotency key for this state-changing request (required, max 255 characters). maxLength: 255 type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/SubmitScheduleQueryInputBody' required: true responses: '202': content: application/json: schema: $ref: '#/components/schemas/ScheduleQueryResponse' description: Accepted '422': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Unprocessable Entity '500': content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Internal Server Error default: content: application/problem+json: schema: $ref: '#/components/schemas/Detail' description: Error security: - BearerAuth: [] components: schemas: SubmitScheduleQueryInputBody: additionalProperties: false properties: referenceDate: description: The date to ask about (DtRef), YYYY-MM-DD. format: date type: string scheduleType: description: >- P (padrão) or E (eventual). Omit to ask without constraining the type. Asking for E on a date with no eventual change is answered with the standard grid. enum: - P - E type: string required: - referenceDate type: object ScheduleQueryResponse: additionalProperties: false properties: answeredAt: description: When the câmara's answer was applied; omitted until it is. format: date-time type: string attempts: description: Queue-put attempts made so far. format: int64 type: integer dispatchedAt: description: When the frame reached the send queue; omitted until it has. format: date-time type: string grids: description: >- The grades de horário the answer returned (never null; empty until the câmara answers). items: $ref: '#/components/schemas/ScheduleQueryGridResponse' type: array id: description: Schedule query id. format: uuid type: string lastError: description: Why the last queue put failed; omitted when none has. type: string numCtrlIF: description: >- The control number this institution issued (NumCtrlIF). The câmara echoes it on the answer, which is what correlates the two. type: string nuop: description: The BCMSG operation number of the frame. type: string referenceDate: description: The date asked about (DtRef). format: date type: string scheduleType: description: >- P (padrão) or E (eventual); omitted when the query did not constrain the type. type: string status: description: >- Lifecycle state. REFUSED means the câmara received the query and returned its E twin (LDL0023E); FAILED means this rail could not deliver it. Both are terminal and they are different facts. enum: - SUBMITTED - DISPATCHED - ANSWERED - REFUSED - FAILED type: string submittedAt: description: When the query was recorded. format: date-time type: string required: - id - numCtrlIF - nuop - referenceDate - status - attempts - submittedAt - grids type: object Detail: additionalProperties: true properties: code: description: >- Stable, machine-readable domain error code scoped to the emitting service (format: -NNNN). 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 upstream: $ref: '#/components/schemas/Upstream' description: >- RFC 9457 extension member: the error a proxied third-party provider reported. Absent unless the emitting service explicitly surfaced one. type: object ScheduleQueryGridResponse: additionalProperties: false properties: closesAt: description: Data Hora Fechamento, the câmara's clock, verbatim. format: date-time type: string codGrdLDL: description: Código Grade LDL, the câmara's own 5-character grid code. type: string opensAt: description: Data Hora Abertura, the câmara's clock, verbatim. format: date-time type: string scheduleType: description: >- Tipo Horário, verbatim. Documented values are P and E; the official type enumerates nothing, so a third value is shown rather than refused. type: string required: - codGrdLDL - opensAt - closesAt - scheduleType 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 Upstream: additionalProperties: false properties: code: description: The upstream provider's own error code, verbatim. examples: - E4001 type: string message: description: >- The upstream provider's own error message, verbatim (bounded, never its raw response body). examples: - account not found at provider type: string type: object securitySchemes: BearerAuth: bearerFormat: JWT description: JWT bearer token issued by the identity provider. scheme: bearer type: http ````