> ## Documentation Index > Fetch the complete documentation index at: https://developers.portao3.com.br/llms.txt > Use this file to discover all available pages before exploring further. # Download a tax document > Gets a temporary link to download the PDF or the XML of a tax document. Choose the file with `type`. The files exist only once the document is `AUTHORIZED`: before that, the request answers 404. Open the returned `url` within 1 hour, and the browser saves the file under the returned `fileName`. ## OpenAPI ````yaml /api-reference/accounting.openapi.json get /realms/{realmId}/organizations/{organizationId}/tax-document/{taxDocumentId}/download openapi: 3.0.3 info: title: Accounting version: 1.0.0 description: >- Portão 3 accounting API. Every endpoint requires a bearer token in the Authorization header (Authorization: Bearer ) unless its page states otherwise; see the Authentication guide. That requirement is not repeated per endpoint. Generated by tools/openapi from code (routes + security) and the hand-written spec (request/response bodies). NFSe issuance: the organization's tax issuer (setup, certificate, logo), its tax documents (issue, list, download, cancel, CSV batches) and the city special-tax-regime lookup. Every route validates path, query, body and multipart form through a zod Input class (`accounting/app/use-case/*/inputs`), which documents it; responses are the named interfaces in `accounting/app/use-case/*/outputs/*Response.ts`. Confidence tiers: generated:typed=24 copied:manual=0 unknown=0. servers: - url: https://api.accounting.v2.portao3.com.br/ description: production - url: https://api.accounting.dev.3pers.com.br/ description: development security: [] tags: - name: Tax Issuers - name: Tax Documents (NFSe) - name: Tax Codes paths: /realms/{realmId}/organizations/{organizationId}/tax-document/{taxDocumentId}/download: get: tags: - Tax Documents (NFSe) summary: Download a tax document description: Gets a temporary link to download the PDF or the XML of a tax document. operationId: >- getRealmsByRealmIdOrganizationsByOrganizationIdTaxDocumentByTaxDocumentIdDownload parameters: - name: realmId in: path required: true description: |- ID of your realm. Format: `UUID` schema: type: string format: uuid example: f495ff0c-ab54-4f99-8e92-ca8682e4de9b - name: organizationId in: path required: true description: |- ID of the organization that owns the tax document. Format: `UUID` schema: type: string format: uuid example: c4bd3f21-dfbd-44e8-8055-68ba15bed410 - name: taxDocumentId in: path required: true description: |- ID of the tax document to download. Format: `UUID` schema: type: string format: uuid example: 3d6f9a2b-1c4e-4f8a-9b7d-5e2c1a0f8b63 - name: type in: query required: true description: 'Which file to download: the `PDF` of the document or its `XML`.' schema: type: string enum: - PDF - XML example: XML responses: '200': description: Successful response content: application/json: schema: type: object properties: fileName: type: string description: >- Name of the file: `NFSe-` once the document has its NFSe number, else `RPS--`, else the ID of the document, followed by the extension (`.pdf` or `.xml`). Files of `TEST` documents are prefixed with `HOMOLOGACAO-`. example: NFSe-2874.xml url: type: string description: >- Temporary download link, valid for 1 hour. Opening it makes the browser save the file. example: >- https://files.example.com/nfse/xml/3d6f9a2b-1c4e-4f8a-9b7d-5e2c1a0f8b63.xml?X-Signature=abc123 required: - fileName - url description: A temporary link to one file of a tax document. '404': description: >- `TAX_DOCUMENT_NOT_FOUND` — No tax document with this ID exists in the organization. `TAX_DOCUMENT_PDF_NOT_FOUND` — The PDF is not available: it exists only once the document is `AUTHORIZED`. `TAX_DOCUMENT_XML_NOT_FOUND` — The XML is not available: it exists only once the document is `AUTHORIZED`. content: application/json: schema: type: object properties: traceId: type: string description: >- Identifier of the request that failed. Quote it when contacting support. example: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: type: string enum: - TAX_DOCUMENT_NOT_FOUND - TAX_DOCUMENT_PDF_NOT_FOUND - TAX_DOCUMENT_XML_NOT_FOUND description: >- Stable, machine-readable error code. Branch on this, never on `message`. origin: type: string enum: - ACCOUNTING description: Service that produced the error. message: type: string description: >- Human-readable explanation. Its wording may change without notice. required: - traceId - code - origin - message example: traceId: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: TAX_DOCUMENT_NOT_FOUND origin: ACCOUNTING message: Tax document not found '422': description: >- `BAD_REQUEST` — A path parameter is not a valid ID, or `type` is missing or is not `PDF` or `XML`; `fields` lists each one. content: application/json: schema: type: object properties: traceId: type: string description: >- Identifier of the request that failed. Quote it when contacting support. example: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: type: string enum: - BAD_REQUEST description: >- Stable, machine-readable error code. Branch on this, never on `message`. origin: type: string enum: - ACCOUNTING description: Service that produced the error. message: type: string description: >- Human-readable explanation. Its wording may change without notice. fields: type: array description: >- One entry per invalid request field (validation errors only). items: type: object properties: field: type: string description: >- Path of the invalid field, e.g. `label` or `values[0].value`. example: label message: type: string description: Why the field was rejected. example: label is required code: type: string description: >- `_` — e.g. `LABEL_REQUIRED`, `TYPE_ONE_OF`, `VALUES_VALUE_TYPE_ERROR`. example: LABEL_REQUIRED values: type: array items: type: string description: >- The accepted values, when the field is an enumeration. required: - field - message - code required: - traceId - code - origin - message example: traceId: 1-68ee2a1b-3c4d5e6f7a8b9c0d1e2f3a4b code: BAD_REQUEST origin: ACCOUNTING message: >- Bad Request: Your request is invalid or incomplete. Please make sure you are requesting with the right fields. fields: - field: type message: 'Invalid option: expected one of "PDF"|"XML"' code: TYPE_ONE_OF values: - PDF - XML ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.