> ## 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. # Register a MED inbound refund credit (THIRD RAIL — moves money) > Posts the receiving-side refund CREDIT on the local Midaz ledger when SPI settles a MED devolucao (the plugin is the SGCT server; JDPI calls this after the pacs.004 is received, contract §2.28). It posts a balanced COMMITTED double-entry (clearing credit, recipient debit-mirror) and mints the idCreditoSgct. The Authorization (Bearer) header is mandatory on this financial ingress: a missing/invalid token is a coded 401. A re-delivered credit for the same endToEndIdDevolucao echoes the prior idCreditoSgct with no second post (idempotent). ## OpenAPI ````yaml /en/openapi/v3-current/pix.yaml post /v1/med/credits/inbound openapi: 3.1.0 info: description: Brazilian PIX Direct (DICT + SPI) plugin API. title: plugin-br-pix-jd version: 1.0.0 servers: [] security: - BearerAuth: [] paths: /v1/med/credits/inbound: post: tags: - MED Inbound Credit summary: Register a MED inbound refund credit (THIRD RAIL — moves money) description: >- Posts the receiving-side refund CREDIT on the local Midaz ledger when SPI settles a MED devolucao (the plugin is the SGCT server; JDPI calls this after the pacs.004 is received, contract §2.28). It posts a balanced COMMITTED double-entry (clearing credit, recipient debit-mirror) and mints the idCreditoSgct. The Authorization (Bearer) header is mandatory on this financial ingress: a missing/invalid token is a coded 401. A re-delivered credit for the same endToEndIdDevolucao echoes the prior idCreditoSgct with no second post (idempotent). operationId: registerMedInboundRefundCredit parameters: - description: >- Bearer access token (the financial-ingress gate; the handler fails closed with PIX-0082 when absent). in: header name: Authorization schema: description: >- Bearer access token (the financial-ingress gate; the handler fails closed with PIX-0082 when absent). examples: - Bearer eyJ... type: string - description: >- Idempotency key (= the endToEndIdDevolucao). Mandatory per the MED SPI credit contract. in: header name: Chave-Idempotencia required: true schema: description: >- Idempotency key (= the endToEndIdDevolucao). Mandatory per the MED SPI credit contract. examples: - D1111111120240918150000000000099 type: string requestBody: content: application/json: schema: $ref: '#/components/schemas/InboundCreditBody' required: true responses: '200': content: application/json: schema: $ref: '#/components/schemas/InboundCreditView' description: OK '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 components: schemas: InboundCreditBody: additionalProperties: true properties: codigoDevolucao: description: >- Refund reason code (BE08/FR01/MD06/SL02; §9.3.3 Obrg=Sim, tolerated-absent). examples: - BE08 type: string dtContabil: description: SPI accounting date (§9.3.3, Obrg=Sim, aaaa-mm-dd). examples: - '2024-09-20' type: string dtHrLiquidacao: description: SPI settlement instant (§9.3.3, Obrg=Sim, UTC). examples: - '2024-09-20T04:00:01.001Z' type: string dtHrOp: description: Recebedor-informed original instant (UTC). examples: - '2024-09-20T04:00:01.001Z' type: string endToEndIdDevolucao: description: >- EndToEndId of the devolucao (pacs.004; the natural key / idempotency anchor, 32-char). examples: - D1234567820240101000000000000099 type: string endToEndIdOriginal: description: >- EndToEndId of the original contested payment (32-char; §9.3.3 Obrg=Sim, tolerated-absent). examples: - E1234567820240101000000000000001 type: string idReqJdPi: description: The JDPI request id of the credit notification. examples: - f1e2d3c4-b5a6-7890-1234-567890abcdef type: string infEntreClientes: description: Payer-to-payee free-text information (§9.3.3, Obrg=Nao). examples: - Compra Paga type: string motivoDevolucao: description: Free-text refund detail. examples: - Devolucao MED. type: string pagador: $ref: '#/components/schemas/InboundCreditPagador' description: Payer (pagador) identity; retained for audit/observability. recebedor: $ref: '#/components/schemas/InboundCreditRecebedor' description: >- Recipient (recebedor) identity; the credit distribute leg target (design D2 mirror). recebedor.ispb is enforced by Validate(). valor: description: Credited refund amount, in reais (a JSON number; JDPI 9.3.3). examples: - 150.85 format: double type: number required: - idReqJdPi - endToEndIdDevolucao - valor type: object InboundCreditView: additionalProperties: false properties: dtHrCreditoSgct: description: The SGCT credit-commit instant (UTC, RFC 3339). examples: - '2024-09-20T04:00:01.001Z' type: string idCreditoSgct: description: The plugin-minted credit-entry id (GUID). examples: - 58F752C5-6376-3252-8305-A2DE3A8525D3 type: string idReqJdPi: description: The JDPI request id (echoed). examples: - f1e2d3c4-b5a6-7890-1234-567890abcdef type: string required: - idReqJdPi - idCreditoSgct - dtHrCreditoSgct 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 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 InboundCreditPagador: additionalProperties: true properties: cpfCnpj: description: Payer CPF or CNPJ (a v5.5.0 string). examples: - '11111111111' type: string ispb: description: Payer participant ISPB (8 digits, a v5.5.0 string). examples: - '04358798' type: string nome: description: Payer name/legal name (§9.3.3 pagador.nome; audit-only). examples: - Fulano de Tal type: string nrAgencia: description: Payer branch (4 digits, a string). examples: - '0001' type: string nrConta: description: Payer account number (a string). examples: - '12345678' type: string tpConta: description: >- Payer account type (§9.3.3, 0 CC, 1 Salário, 2 Poupança, 3 Pagamento, 4 PI; audit-only). examples: - 0 format: int64 type: integer tpPessoa: description: Payer person type (§9.3.3, 0 PF, 1 PJ; audit-only). examples: - 0 format: int64 type: integer required: - ispb type: object InboundCreditRecebedor: additionalProperties: true properties: cpfCnpj: description: Recipient CPF or CNPJ (a v5.5.0 string). examples: - '22222222222' type: string ispb: description: Recipient participant ISPB (8 digits, a v5.5.0 string). examples: - '17826860' type: string nrAgencia: description: Recipient branch (4 digits, a string). examples: - '0001' type: string nrConta: description: Recipient account number (a string). examples: - '87654321' type: string tpConta: description: >- Recipient account type (§9.3.3, 0 CC, 1 Salário, 2 Poupança, 3 Pagamento, 4 PI). THIRD RAIL: disambiguates same-holder accounts. examples: - 0 format: int64 type: integer tpPessoa: description: Recipient person type (§9.3.3, 0 PF, 1 PJ). examples: - 1 format: int64 type: integer required: - ispb 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 ````