> ## 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. # Create a PIX refund > Creates a PIX refund (devolução) against an executed transaction. Bacen makes the refund the RECIPIENT's operation, so the caller must be the party that RECEIVED the original payment: the requesting accountId's document has to equal the original payee's document. The original payer cannot refund a payment it sent — that is the MED/fraud path, not this one. Identify the original with BOTH transactionId (the local UUID) and endToEndId, and it must still be EXECUTED. Partial refunds are allowed and they ACCUMULATE: the amount is checked against the original amount minus everything already refunded, under a row lock on the original, so two concurrent refunds cannot together exceed it. An on-us original is refunded as a synchronous ledger reversal from the refunder to the original payer; a payment received from another institution is submitted to JDPI first, and the refund's own end-to-end id comes back from JD. code is the return reason and is accepted only as BE08, FR01, MD06 or SL02. ⚠️ Send clientRequestId on an on-us refund. Without it a retry posts a SECOND reversal: each attempt mints a fresh refund end-to-end id, so nothing dedups them, and the money moves twice. With it, a retry replays the existing refund as a success. The cross-institution branch is already retry-safe on its own. Refusals: 422 PIX-0036 when no EXECUTED transaction matches that (endToEndId, transactionId) pair; 400 PIX-0089 when the original is an outgoing payment (only the receiving institution can return what it received); 400 PIX-0087 when the caller is refunding its own outgoing payment; 400 PIX-0088 when the caller is not the original payee; 409 PIX-0032 when this amount plus the prior refunds would exceed the original; 422 PIX-0030 on a non-positive amount; 422 PIX-0108 when the requesting account is not bound to a ledger account; 400 PIX-0061 when accountId or endToEndId is empty, transactionId is not a UUID, or code is outside the four accepted values. ## OpenAPI ````yaml /en/openapi/v3-current/pix.yaml post /v1/refunds 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/refunds: post: tags: - Refunds summary: Create a PIX refund description: >- Creates a PIX refund (devolução) against an executed transaction. Bacen makes the refund the RECIPIENT's operation, so the caller must be the party that RECEIVED the original payment: the requesting accountId's document has to equal the original payee's document. The original payer cannot refund a payment it sent — that is the MED/fraud path, not this one. Identify the original with BOTH transactionId (the local UUID) and endToEndId, and it must still be EXECUTED. Partial refunds are allowed and they ACCUMULATE: the amount is checked against the original amount minus everything already refunded, under a row lock on the original, so two concurrent refunds cannot together exceed it. An on-us original is refunded as a synchronous ledger reversal from the refunder to the original payer; a payment received from another institution is submitted to JDPI first, and the refund's own end-to-end id comes back from JD. code is the return reason and is accepted only as BE08, FR01, MD06 or SL02. ⚠️ Send clientRequestId on an on-us refund. Without it a retry posts a SECOND reversal: each attempt mints a fresh refund end-to-end id, so nothing dedups them, and the money moves twice. With it, a retry replays the existing refund as a success. The cross-institution branch is already retry-safe on its own. Refusals: 422 PIX-0036 when no EXECUTED transaction matches that (endToEndId, transactionId) pair; 400 PIX-0089 when the original is an outgoing payment (only the receiving institution can return what it received); 400 PIX-0087 when the caller is refunding its own outgoing payment; 400 PIX-0088 when the caller is not the original payee; 409 PIX-0032 when this amount plus the prior refunds would exceed the original; 422 PIX-0030 on a non-positive amount; 422 PIX-0108 when the requesting account is not bound to a ledger account; 400 PIX-0061 when accountId or endToEndId is empty, transactionId is not a UUID, or code is outside the four accepted values. operationId: createRefund requestBody: content: application/json: schema: $ref: '#/components/schemas/RefundBody' required: true responses: '201': content: application/json: schema: $ref: '#/components/schemas/RefundResponse' description: Created '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: RefundBody: additionalProperties: false properties: accountId: description: The requesting account (the original payee). examples: - acc-123 type: string amount: description: Refund amount in centavos (must be greater than zero). examples: - 5000 format: int64 type: integer clientRequestId: description: >- Optional client idempotency token. A retry carrying the same value replays the existing refund instead of creating a duplicate (intra-PSP double-refund protection); omit to opt out. examples: - req-2025-01-01-abc123 type: string code: description: PIX return reason (BE08/FR01/MD06/SL02). examples: - MD06 type: string description: description: Free-text refund description. examples: - Wrong amount type: string endToEndId: description: The original transaction's end-to-end id. examples: - E1234567890 type: string transactionId: description: The original transaction id (UUID). examples: - d1f9c0a2-... type: string required: - endToEndId - accountId - transactionId - code - amount type: object RefundResponse: additionalProperties: false properties: accountId: description: The refunding account id. examples: - ext-acc-123 type: string amount: description: Refund amount in centavos. examples: - 5000 format: int64 type: integer code: description: The PIX return reason. examples: - MD06 type: string description: description: Refund description. examples: - Wrong amount type: string endToEndId: description: The original transaction's end-to-end id. examples: - E1234567890 type: string endToEndRefundId: description: The refund's own end-to-end id. examples: - D1234567890 type: string id: description: The created refund id. examples: - a2f9c0d1-... type: string status: description: eTransactionStatus name. examples: - EXECUTED type: string required: - id - accountId - code - endToEndId - endToEndRefundId - amount - status 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 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 ````