> ## Documentation Index > Fetch the complete documentation index at: https://docs.usecroma.com/llms.txt > Use this file to discover all available pages before exploring further. # DIAN Doctrina Document > Retrieve the text of one DIAN doctrine document by the `document_id` returned by `dian-doctrina-search`: the official title and the body of the oficio, concepto or norm. Compiled norms run to millions of characters, so the body is returned in character ranges: `content.total_length` is the full size, and when `content.has_more` is true request the next range with `offset: content.next_offset`. `found: false` when no document carries that id. ## OpenAPI ````yaml /api-reference/openapi.json post /co/dian/doctrina/v1 openapi: 3.1.0 info: title: Croma Marketplace API version: 1.0.0 description: >- Government-data APIs for Colombia, Peru, Mexico, and global web search. Croma normalizes public-sector data into structured JSON for product teams and AI agents. servers: - url: https://api.croma.run security: [] paths: /co/dian/doctrina/v1: post: tags: - Colombia - DIAN summary: DIAN Doctrina Document description: >- Retrieve the text of one DIAN doctrine document by the `document_id` returned by `dian-doctrina-search`: the official title and the body of the oficio, concepto or norm. Compiled norms run to millions of characters, so the body is returned in character ranges: `content.total_length` is the full size, and when `content.has_more` is true request the next range with `offset: content.next_offset`. `found: false` when no document carries that id. operationId: dian_doctrina_document requestBody: required: true content: application/json: schema: type: object required: - document_id properties: document_id: type: string pattern: ^[A-Za-z0-9_()[\]-]{3,120}$ description: >- `document_id` devuelto por la búsqueda (p. ej. `oficio_dian_18075_2023`). offset: type: integer minimum: 0 maximum: 10000000 default: 0 description: >- First character of the range to return. Pass the previous response's `next_offset` to continue reading. limit: type: integer minimum: 1000 maximum: 1000000 default: 200000 description: Maximum characters to return (1000-1000000). additionalProperties: false example: document_id: oficio_dian_18075_2023 responses: '200': description: Successful response headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string X-RateLimit-Limit: description: Requests allowed in the current window. schema: type: integer X-RateLimit-Remaining: description: Requests left before you are throttled. schema: type: integer X-RateLimit-Reset: description: ISO 8601 timestamp when the window resets. schema: type: string format: date-time X-Cache: description: HIT or MISS. Cached hits still count against your quota. schema: type: string enum: - HIT - MISS content: application/json: schema: $ref: '#/components/schemas/DianDoctrinaDocumentResponse' '400': description: Invalid request body headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' '401': description: Missing or invalid API key headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' '429': description: Rate limit exceeded headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string X-RateLimit-Limit: description: Requests allowed in the current window. schema: type: integer X-RateLimit-Remaining: description: Requests left before you are throttled. schema: type: integer X-RateLimit-Reset: description: ISO 8601 timestamp when the window resets. schema: type: string format: date-time Retry-After: description: Seconds to wait before retrying. schema: type: integer content: application/json: schema: $ref: '#/components/schemas/ApiError' '500': description: Internal error headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' '502': description: Upstream source returned an error headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' security: - bearerAuth: [] externalDocs: description: Interactive documentation and examples url: https://docs.usecroma.com/guides/colombia/dian components: schemas: DianDoctrinaDocumentResponse: type: object required: - data properties: data: type: object required: - found - document_id - title - content - url properties: found: type: boolean description: Falso cuando ningún documento corresponde al `document_id`. document_id: type: string title: type: - string - 'null' description: Título oficial. content: oneOf: - $ref: '#/components/schemas/DianDoctrinaContent' - type: 'null' description: Null cuando `found` es falso. url: type: string format: uri ApiError: type: object required: - error properties: error: type: object required: - type - code - message properties: type: type: string description: >- Broad category: invalid_request_error, authentication_error, not_found_error, rate_limit_error, upstream_error, api_error. code: type: string description: Machine-readable specific code. message: type: string description: Human-readable explanation, safe to surface in UI. param: type: string description: Field that triggered the error. Present on validation errors. details: type: object description: Free-form structured detail. DianDoctrinaContent: type: object required: - text - offset - total_length - has_more - next_offset properties: text: type: string description: Fragmento del texto del documento en el rango solicitado. offset: type: integer description: Carácter inicial de este fragmento. total_length: type: integer description: Longitud total del documento en caracteres. has_more: type: boolean description: Verdadero cuando queda texto por recuperar. next_offset: type: - integer - 'null' description: >- `offset` a usar para el siguiente fragmento; null cuando no queda más. securitySchemes: bearerAuth: type: http scheme: bearer description: 'Use Authorization: Bearer YOUR_API_KEY' ````