Validate a Guatemalan FEL electronic invoice (DTE) XML against the official SAT

Validate a Guatemalan FEL electronic invoice (DTE) XML against the official SAT XML schema (GT_Documento). Returns whether it is schema-valid and the schema errors if not. Structural/schema validation only.

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Endpoint

POST https://api.resetparatodos.com/x402/v1/guatemala/fel/validate

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Example input (from the provider)

{
  "body": {
    "xml": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<dte:GTDocumento xmlns:dte=\"http://www.sat.gob.gt/dte/fel/0.1.0\" Version=\"0.4\">\n  <dte:SAT ClaseDocumento=\"dte\">\n    <dte:DTE ID=\"DatosCertificados\">\n      <dte:DatosEmision ID=\"DatosEmision\">\n        <dte:DatosGenerales CodigoMoneda=\"GTQ\" FechaHoraEmision=\"2026-09-04T10:15:00-06:00\" Tipo=\"FACT\"/>\n        <dte:Emisor AfiliacionIVA=\"GEN\" CodigoEstablecimiento=\"1\" CorreoEmisor=\"facturacion@ejemplo.gt\" NITEmisor=\"12345678\" NombreComercial=\"EMPRESA DEMO\" NombreEmisor=\"EMPRESA DEMO, SOCIEDAD ANONIMA\">\n          <dte:DireccionEmisor>\n            <dte:Direccion>5A AVENIDA 10-20 ZONA 1</dte:Direccion>\n            <dte:CodigoPostal>01001</dte:CodigoPostal>\n            <dte:Municipio>GUATEMALA</dte:Municipio>\n            <dte:Departamento>GUATEMALA</dte:Departamento>\n            <dte:Pais>GT</dte:Pais>\n          </dte:DireccionEmisor>\n        </dte:Emisor>\n        <dte:Receptor CorreoReceptor=\"cliente@ejemplo.gt\" IDReceptor=\"CF\" NombreReceptor=\"CONSUMIDOR FINAL\">\n          <dte:DireccionReceptor>\n            <dte:Direccion>CIUDAD</dte:Direccion>\n            <dte:CodigoPostal>01001</dte:CodigoPostal>\n            <dte:Municipio>GUATEMALA</dte:Municipio>\n            <dte:Departamento>GUATEMALA</dte:Departamento>\n            <dte:Pais>GT</dte:Pais>\n          </dte:DireccionReceptor>\n        </dte:Receptor>\n        <dte:Frases>\n          <dte:Frase CodigoEscenario=\"1\" TipoFrase=\"1\"/>\n        </dte:Frases>\n        <dte:Items>\n          <dte:Item BienOServicio=\"B\" NumeroLinea=\"1\">\n            <dte:Cantidad>1</dte:Cantidad>\n            <dte:UnidadMedida>UND</dte:UnidadMedida>\n            <dte:Descripcion>SERVICIO DE EJEMPLO</dte:Descripcion>\n            <dte:PrecioUnitario>100.00</dte:PrecioUnitario>\n            <dte:Precio>100.00</dte:Precio>\n            <dte:Descuento>0.00</dte:Descuento>\n            <dte:Impuestos>\n              <dte:Impuesto>\n                <dte:NombreCorto>IVA</dte:NombreCorto>\n                <dte:CodigoUnidadGravable>1</dte:CodigoUnidadGravable>\n                <dte:MontoGravable>89.29</dte:MontoGravable>\n                <dte:MontoImpuesto>10.71</dte:MontoImpuesto>\n              </dte:Impuesto>\n            </dte:Impuestos>\n            <dte:Total>100.00</dte:Total>\n          </dte:Item>\n        </dte:Items>\n        <dte:Totales>\n          <dte:TotalImpuestos>\n            <dte:TotalImpuesto NombreCorto=\"IVA\" TotalMontoImpuesto=\"10.71\"/>\n          </dte:TotalImpuestos>\n          <dte:GranTotal>100.00</dte:GranTotal>\n        </dte:Totales>\n      </dte:DatosEmision>\n    </dte:DTE>\n  </dte:SAT>\n  <ds:Signature xmlns:ds=\"http://www.w3.org/2000/09/xmldsig#\">\n    <ds:SignedInfo>\n      <ds:CanonicalizationMethod Algorithm=\"http://www.w3.org/TR/2001/REC-xml-c14n-20010315\"/>\n      <ds:SignatureMethod Algorithm=\"http://www.w3.org/2001/04/xmldsig-more#rsa-sha256\"/>\n      <ds:Reference URI=\"#DatosCertificados\">\n        <ds:DigestMethod Algorithm=\"http://www.w3.org/2001/04/xmlenc#sha256\"/>\n        <ds:DigestValue>bXVlc3RyYS1kaWdlc3Qtbm8tdmFsaWRv</ds:DigestValue>\n      </ds:Reference>\n    </ds:SignedInfo>\n    <ds:SignatureValue>bXVlc3RyYS1maXJtYS1kZS1lamVtcGxvLW5vLXZhbGlkYQ==</ds:SignatureValue>\n  </ds:Signature>\n</dte:GTDocumento>\n"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "properties": {
            "xml": {
              "description": "FEL DTE XML document",
              "type": "string"
            },
            "xml_base64": {
              "description": "Alternatively, the XML base64-encoded",
              "type": "string"
            }
          },
          "required": [
            "xml"
          ],
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST",
            "PUT",
            "PATCH"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "required": [
            "ok",
            "request_id",
            "product",
            "method_version",
            "deterministic",
            "checked_at",
            "result",
            "evidence",
            "payment",
            "disclaimer"
          ],
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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