---
title: "Crear retención"
description: "Crea y timbra inmediatamente un documento de retención del SAT."
language: es-MX
canonical_url: "https://exac.mx/docs/mcp/tools/create_withholding"
md_url: "https://exac.mx/docs/mcp/tools/create_withholding.md"
---

# Crear retención

Crea y timbra inmediatamente un documento de retención del SAT.

Herramienta: `create_withholding`

## Propósito

Crea y timbra inmediatamente un documento de retención del SAT.

### Úsala cuando

Una retención está lista para emitirse.

### No la uses cuando

Necesitas un borrador CFDI o un ingreso normal.

| Detalle | Valor |
| --- | --- |
| Permisos | invoices:manage |
| Efectos secundarios | Destructivo y externo |
| Idempotencia | Idempotente |

## Esquema de entrada

```json
{
  "type": "object",
  "properties": {
    "idempotencyKey": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "description": "Unique retry key for this exact operation. Reuse it only when retrying the same request."
    },
    "input": {
      "type": "object",
      "properties": {
        "customerId": {
          "$ref": "#/definitions/__schema0"
        },
        "withholdingTypeCode": {
          "$ref": "#/definitions/__schema1"
        },
        "period": {
          "$ref": "#/definitions/__schema2"
        },
        "operationAmount": {
          "$ref": "#/definitions/__schema6"
        },
        "exemptAmount": {
          "$ref": "#/definitions/__schema7"
        },
        "taxes": {
          "$ref": "#/definitions/__schema9"
        },
        "issuedLocalDateTime": {
          "$ref": "#/definitions/__schema14"
        },
        "description": {
          "$ref": "#/definitions/__schema15"
        },
        "internalFolio": {
          "$ref": "#/definitions/__schema17"
        },
        "pdfCustomSection": {
          "$ref": "#/definitions/__schema18"
        }
      },
      "required": [
        "customerId",
        "withholdingTypeCode",
        "period",
        "operationAmount",
        "taxes"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "idempotencyKey",
    "input"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false,
  "definitions": {
    "__schema0": {
      "type": "string",
      "minLength": 1
    },
    "__schema1": {
      "type": "string",
      "enum": [
        "10",
        "11",
        "12",
        "13",
        "14",
        "15",
        "16",
        "17",
        "18",
        "19",
        "20",
        "21",
        "22",
        "23",
        "24",
        "25",
        "26",
        "27",
        "28",
        "01",
        "02",
        "03",
        "04",
        "05",
        "06",
        "07",
        "08",
        "09"
      ],
      "description": "Active SAT withholding-type code.",
      "x-exac-sat-catalog": "withholding-types"
    },
    "__schema2": {
      "type": "object",
      "properties": {
        "fromMonth": {
          "$ref": "#/definitions/__schema3"
        },
        "toMonth": {
          "$ref": "#/definitions/__schema4"
        },
        "year": {
          "$ref": "#/definitions/__schema5"
        }
      },
      "required": [
        "fromMonth",
        "toMonth",
        "year"
      ],
      "additionalProperties": false
    },
    "__schema3": {
      "type": "integer",
      "minimum": 1,
      "maximum": 12
    },
    "__schema4": {
      "type": "integer",
      "minimum": 1,
      "maximum": 12
    },
    "__schema5": {
      "type": "integer",
      "minimum": 2000,
      "maximum": 2100
    },
    "__schema6": {
      "type": "number",
      "exclusiveMinimum": 0,
      "description": "Operation amount in pesos"
    },
    "__schema7": {
      "description": "Exempt amount in pesos; defaults to zero",
      "allOf": [
        {
          "$ref": "#/definitions/__schema8"
        }
      ]
    },
    "__schema8": {
      "type": "number",
      "minimum": 0
    },
    "__schema9": {
      "minItems": 1,
      "type": "array",
      "items": {
        "$ref": "#/definitions/__schema10"
      }
    },
    "__schema10": {
      "type": "object",
      "properties": {
        "tax": {
          "$ref": "#/definitions/__schema11"
        },
        "amount": {
          "$ref": "#/definitions/__schema12"
        },
        "paymentType": {
          "$ref": "#/definitions/__schema13"
        }
      },
      "required": [
        "tax",
        "amount",
        "paymentType"
      ],
      "additionalProperties": false
    },
    "__schema11": {
      "type": "string",
      "enum": [
        "isr",
        "iva",
        "ieps"
      ]
    },
    "__schema12": {
      "type": "number",
      "exclusiveMinimum": 0,
      "description": "Amount retained in pesos"
    },
    "__schema13": {
      "type": "string",
      "enum": [
        "definitive",
        "provisional"
      ]
    },
    "__schema14": {
      "type": "string",
      "pattern": "^(\\d{4})-(\\d{2})-(\\d{2})T(\\d{2}):(\\d{2}):(\\d{2})(?:\\.(\\d{1,9}))?$"
    },
    "__schema15": {
      "description": "Required when withholdingTypeCode is 25",
      "allOf": [
        {
          "$ref": "#/definitions/__schema16"
        }
      ]
    },
    "__schema16": {
      "type": "string",
      "minLength": 1
    },
    "__schema17": {
      "type": "string",
      "minLength": 1
    },
    "__schema18": {
      "type": "string"
    }
  }
}
```

## Esquema de salida

```json
{
  "type": "object",
  "properties": {
    "data": {
      "type": "object",
      "properties": {
        "documentRef": {
          "type": "string",
          "pattern": "^withholding:.+$"
        },
        "status": {
          "type": "string",
          "const": "valid"
        }
      },
      "required": [
        "documentRef",
        "status"
      ],
      "additionalProperties": false
    },
    "error": {
      "$schema": "http://json-schema.org/draft-07/schema#",
      "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"
          ]
        },
        "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
        }
      },
      "required": [
        "code",
        "message"
      ],
      "additionalProperties": false
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#",
  "additionalProperties": false,
  "oneOf": [
    {
      "required": [
        "data"
      ]
    },
    {
      "required": [
        "error"
      ]
    }
  ]
}
```

## Herramientas relacionadas

- [`search_documents`](/docs/mcp/tools/search_documents.md) — **Buscar documentos**: Busca una familia de documentos usando referencias públicas estables.

- [`get_document`](/docs/mcp/tools/get_document.md) — **Leer documento**: Recupera un documento mediante su documentRef público.

## Flujo relacionado

[Consulta los flujos canónicos en la introducción](/docs.md)

## Operaciones REST equivalentes

- [`POST /v1/withholdings`](/docs/api/documents/withholding-documents/create-withholding.md)

Documentación completa: https://exac.mx/docs.md
Índice para agentes: https://exac.mx/docs/llms.txt