---
title: "Refund sales receipt"
description: "Creates a partial or full refund for a sales receipt using its selected settlement method."
language: en
canonical_url: "https://exac.mx/docs/en/api/documents/sales-receipts/create-sales-receipt-refund"
md_url: "https://exac.mx/docs/en/api/documents/sales-receipts/create-sales-receipt-refund.md"
---

# Refund sales receipt

Creates a partial or full refund for a sales receipt using its selected settlement method.

## Request

`POST /v1/sales-receipts/{documentRef}/refunds`

- **Authorization:** Required permission: `receipts:refund`.

- **Environments:** Production and sandbox

- **Idempotency:** Required

## Canonical machine contract

This fragment is generated from the canonical operation and Zod contracts used by the route.

```json
{
  "method": "POST",
  "path": "/v1/sales-receipts/{documentRef}/refunds",
  "operation": {
    "operationId": "createSalesReceiptRefund",
    "tags": [
      "Sales receipts"
    ],
    "summary": "Refund sales receipt",
    "description": "Creates a partial or full refund for a sales receipt using its selected settlement method.",
    "security": [
      {
        "bearerAuth": []
      }
    ],
    "parameters": [
      {
        "name": "documentRef",
        "in": "path",
        "required": true,
        "schema": {
          "type": "string",
          "pattern": "^sales_receipt:.+$"
        }
      },
      {
        "name": "Idempotency-Key",
        "in": "header",
        "required": true,
        "schema": {
          "type": "string",
          "minLength": 1,
          "maxLength": 200
        },
        "description": "Unique retry key for this exact operation. Reuse it only when retrying the same request."
      }
    ],
    "requestBody": {
      "required": true,
      "content": {
        "application/json": {
          "schema": {
            "type": "object",
            "properties": {
              "amount": {
                "type": "number",
                "exclusiveMinimum": 0
              },
              "reason": {
                "type": "string",
                "enum": [
                  "commercial_refund",
                  "resico_reconciliation"
                ]
              },
              "settlementMethod": {
                "type": "string",
                "enum": [
                  "cash",
                  "transfer",
                  "original_method",
                  "customer_credit"
                ]
              },
              "allocations": {
                "minItems": 1,
                "type": "array",
                "items": {
                  "anyOf": [
                    {
                      "type": "object",
                      "properties": {
                        "kind": {
                          "type": "string",
                          "const": "original_line"
                        },
                        "lineRef": {
                          "type": "string",
                          "minLength": 1
                        },
                        "adjustmentMode": {
                          "type": "string",
                          "const": "quantity"
                        },
                        "quantity": {
                          "type": "number",
                          "exclusiveMinimum": 0
                        }
                      },
                      "required": [
                        "kind",
                        "lineRef",
                        "adjustmentMode",
                        "quantity"
                      ],
                      "additionalProperties": false
                    },
                    {
                      "type": "object",
                      "properties": {
                        "kind": {
                          "type": "string",
                          "const": "original_line"
                        },
                        "lineRef": {
                          "type": "string",
                          "minLength": 1
                        },
                        "adjustmentMode": {
                          "type": "string",
                          "const": "amount"
                        },
                        "amount": {
                          "type": "number",
                          "exclusiveMinimum": 0
                        }
                      },
                      "required": [
                        "kind",
                        "lineRef",
                        "adjustmentMode",
                        "amount"
                      ],
                      "additionalProperties": false
                    },
                    {
                      "type": "object",
                      "properties": {
                        "kind": {
                          "type": "string",
                          "const": "custom"
                        },
                        "description": {
                          "type": "string",
                          "minLength": 1
                        },
                        "quantity": {
                          "type": "number",
                          "exclusiveMinimum": 0
                        },
                        "amount": {
                          "type": "number",
                          "exclusiveMinimum": 0
                        },
                        "productKey": {
                          "type": "string",
                          "minLength": 1
                        },
                        "unitKey": {
                          "type": "string",
                          "minLength": 1
                        },
                        "taxability": {
                          "type": "string",
                          "enum": [
                            "standard",
                            "zero",
                            "exempt"
                          ]
                        },
                        "taxRate": {
                          "type": "number",
                          "minimum": 0,
                          "maximum": 1
                        },
                        "taxIncluded": {
                          "type": "boolean"
                        }
                      },
                      "required": [
                        "kind",
                        "description",
                        "quantity",
                        "amount",
                        "productKey",
                        "unitKey",
                        "taxability",
                        "taxRate",
                        "taxIncluded"
                      ],
                      "additionalProperties": false
                    }
                  ]
                }
              },
              "note": {
                "type": "string"
              }
            },
            "required": [
              "amount",
              "reason",
              "settlementMethod"
            ],
            "additionalProperties": false
          },
          "example": {
            "amount": 250,
            "reason": "commercial_refund",
            "settlementMethod": "original_method"
          }
        }
      }
    },
    "responses": {
      "201": {
        "description": "Operation completed.",
        "headers": {
          "Request-Id": {
            "$ref": "#/components/headers/RequestId"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "type": "object",
              "properties": {
                "data": {
                  "type": "object",
                  "properties": {
                    "reason": {
                      "type": "string",
                      "enum": [
                        "commercial_refund",
                        "resico_reconciliation"
                      ]
                    },
                    "settlementMethod": {
                      "type": "string",
                      "enum": [
                        "cash",
                        "transfer",
                        "original_method",
                        "customer_credit"
                      ]
                    },
                    "fiscalTreatment": {
                      "type": "string",
                      "enum": [
                        "none",
                        "credit_note"
                      ]
                    },
                    "total": {
                      "$ref": "#/components/schemas/Money"
                    },
                    "note": {
                      "type": "string"
                    },
                    "documentRef": {
                      "type": "string",
                      "pattern": "^sales_receipt_refund:.+$"
                    },
                    "category": {
                      "type": "string",
                      "const": "sales_receipt_refund"
                    },
                    "receiptDocumentRef": {
                      "type": "string",
                      "pattern": "^sales_receipt:.+$"
                    },
                    "status": {
                      "type": "string",
                      "enum": [
                        "pending",
                        "processing",
                        "completed",
                        "failed",
                        "recovery_required",
                        "canceled"
                      ]
                    },
                    "businessDate": {
                      "type": "string",
                      "format": "date",
                      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$"
                    },
                    "createdAt": {
                      "type": "string",
                      "format": "date-time",
                      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
                    },
                    "completedAt": {
                      "type": "string",
                      "format": "date-time",
                      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$"
                    }
                  },
                  "required": [
                    "reason",
                    "settlementMethod",
                    "fiscalTreatment",
                    "total",
                    "documentRef",
                    "category",
                    "receiptDocumentRef",
                    "status",
                    "createdAt"
                  ],
                  "additionalProperties": false
                }
              },
              "required": [
                "data"
              ],
              "additionalProperties": false
            },
            "example": {
              "data": {
                "reason": "commercial_refund",
                "settlementMethod": "original_method",
                "fiscalTreatment": "none",
                "total": {
                  "amount": 250,
                  "currency": "MXN"
                },
                "documentRef": "sales_receipt_refund:refund-example",
                "category": "sales_receipt_refund",
                "receiptDocumentRef": "sales_receipt:receipt-example",
                "status": "pending",
                "createdAt": "2026-07-15T12:00:00.000Z"
              }
            }
          }
        }
      },
      "400": {
        "description": "Invalid request.\n\n`validation_error`",
        "headers": {
          "Request-Id": {
            "$ref": "#/components/headers/RequestId"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ApiError"
            }
          }
        }
      },
      "401": {
        "description": "Missing or invalid credential.\n\n`unauthenticated`",
        "headers": {
          "Request-Id": {
            "$ref": "#/components/headers/RequestId"
          },
          "WWW-Authenticate": {
            "$ref": "#/components/headers/WWWAuthenticate"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ApiError"
            }
          }
        }
      },
      "403": {
        "description": "The credential does not include the `receipts:refund` permission.\n\n`forbidden`",
        "headers": {
          "Request-Id": {
            "$ref": "#/components/headers/RequestId"
          },
          "WWW-Authenticate": {
            "$ref": "#/components/headers/WWWAuthenticate"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ApiError"
            }
          }
        }
      },
      "404": {
        "description": "Resource not found.\n\n`not_found`",
        "headers": {
          "Request-Id": {
            "$ref": "#/components/headers/RequestId"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ApiError"
            }
          }
        }
      },
      "405": {
        "description": "Method not allowed.\n\n`method_not_allowed`",
        "headers": {
          "Request-Id": {
            "$ref": "#/components/headers/RequestId"
          },
          "Allow": {
            "$ref": "#/components/headers/Allow"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ApiError"
            }
          }
        }
      },
      "409": {
        "description": "The operation conflicts with its current state or idempotency key.\n\nPossible codes: `conflict`, `idempotency_conflict`, `operation_in_progress`, `recovery_required`.",
        "headers": {
          "Request-Id": {
            "$ref": "#/components/headers/RequestId"
          },
          "Retry-After": {
            "$ref": "#/components/headers/RetryAfter"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ApiError"
            }
          }
        }
      },
      "429": {
        "description": "Too many requests.\n\n`rate_limited`",
        "headers": {
          "Request-Id": {
            "$ref": "#/components/headers/RequestId"
          },
          "Retry-After": {
            "$ref": "#/components/headers/RetryAfter"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ApiError"
            }
          }
        }
      },
      "500": {
        "description": "Internal server error.\n\n`internal`",
        "headers": {
          "Request-Id": {
            "$ref": "#/components/headers/RequestId"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ApiError"
            }
          }
        }
      },
      "503": {
        "description": "Service temporarily unavailable.\n\n`provider_unavailable`",
        "headers": {
          "Request-Id": {
            "$ref": "#/components/headers/RequestId"
          },
          "Retry-After": {
            "$ref": "#/components/headers/RetryAfter"
          }
        },
        "content": {
          "application/json": {
            "schema": {
              "$ref": "#/components/schemas/ApiError"
            }
          }
        }
      }
    },
    "x-exac-environments": [
      "production",
      "sandbox"
    ]
  },
  "components": {
    "schemas": {
      "ApiError": {
        "type": "object",
        "properties": {
          "error": {
            "$ref": "#/components/schemas/ProgrammaticError"
          }
        },
        "required": [
          "error"
        ],
        "additionalProperties": false
      },
      "ProgrammaticError": {
        "type": "object",
        "properties": {
          "code": {
            "type": "string",
            "enum": [
              "validation_error",
              "unauthenticated",
              "forbidden",
              "not_found",
              "method_not_allowed",
              "conflict",
              "idempotency_conflict",
              "operation_in_progress",
              "recovery_required",
              "rate_limited",
              "provider_unavailable",
              "internal"
            ],
            "description": "Recommended action by code:\n\n- `validation_error` — Correct each details.issues entry using its path and stable issue code.\n- `unauthenticated` — Provide a valid API key or OAuth access token.\n- `forbidden` — Use a credential with the required permission.\n- `not_found` — Check the organization-scoped resource identifier.\n- `method_not_allowed` — Use the documented HTTP method.\n- `conflict` — Refresh the resource and resolve its current state.\n- `idempotency_conflict` — Use a new idempotency key for a changed request.\n- `operation_in_progress` — Wait for Retry-After, then repeat the exact request.\n- `recovery_required` — Do not retry automatically; reconcile the provider outcome.\n- `rate_limited` — Wait for Retry-After before retrying.\n- `provider_unavailable` — Retry only when the response marks the failure as retryable.\n- `internal` — Retry later and contact support if the error persists."
          },
          "message": {
            "type": "string"
          },
          "details": {
            "type": "object",
            "properties": {
              "issues": {
                "type": "array",
                "items": {
                  "type": "object",
                  "properties": {
                    "path": {
                      "type": "array",
                      "items": {
                        "anyOf": [
                          {
                            "type": "string"
                          },
                          {
                            "type": "number"
                          }
                        ]
                      }
                    },
                    "message": {
                      "type": "string"
                    },
                    "code": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "path",
                    "message"
                  ],
                  "additionalProperties": false
                }
              },
              "retryable": {
                "type": "boolean"
              },
              "retryAfterSeconds": {
                "type": "integer",
                "exclusiveMinimum": 0,
                "maximum": 9007199254740991
              }
            },
            "additionalProperties": false
          },
          "status": {
            "type": "integer",
            "minimum": -9007199254740991,
            "maximum": 9007199254740991
          }
        },
        "required": [
          "code",
          "message",
          "status"
        ],
        "additionalProperties": false
      },
      "Money": {
        "type": "object",
        "properties": {
          "amount": {
            "type": "number"
          },
          "currency": {
            "type": "string"
          }
        },
        "required": [
          "amount",
          "currency"
        ],
        "additionalProperties": false
      }
    }
  }
}
```

[OpenAPI 3.1](/openapi.json)

## Equivalent MCP tools

- [`refund_sales_receipt`](/docs/en/mcp/tools/refund_sales_receipt.md)

Complete documentation: https://exac.mx/docs/en.md
Agent documentation index: https://exac.mx/docs/en/llms.txt