> ## Documentation Index > Fetch the complete documentation index at: https://docs.paywise.de/llms.txt > Use this file to discover all available pages before exploring further. # Upload document to request to client answer > Upload a document file for your answer. Use this for `fileupload` type requests. **IMPORTANT:** For `fileupload` type requests, upload all documents FIRST, then submit the answer. Once the answer is submitted, no more documents can be uploaded. **Allowed file types:** PDF, JPEG, PNG **Maximum file size:** 10 MB ## OpenAPI ````yaml post /v1/mandates/{mandate_id}/requests-to-client/{request_id}/answer/documents/ openapi: 3.0.3 info: title: paywise Case Management API version: v1 description: | Use our Case Management API to perform the debt entire collection process. Please refer to the [official docs][ref1] for more! [ref1]: https://docs.paywise.de/api-docs/case-management-api/introduction servers: - url: https://api.paywise.de description: Production environment security: [] externalDocs: url: https://docs.paywise.de/api-docs/case-management-api/ paths: /v1/mandates/{mandate_id}/requests-to-client/{request_id}/answer/documents/: post: tags: - mandates summary: Upload document to request to client answer description: >- Upload a document file for your answer. Use this for `fileupload` type requests. **IMPORTANT:** For `fileupload` type requests, upload all documents FIRST, then submit the answer. Once the answer is submitted, no more documents can be uploaded. **Allowed file types:** PDF, JPEG, PNG **Maximum file size:** 10 MB operationId: upload-request-to-client-answer-document parameters: - in: path name: mandate_id schema: type: string format: uuid required: true - in: path name: request_id schema: type: string required: true requestBody: content: application/json: schema: $ref: '#/components/schemas/AnswerDocumentUploadRequest' application/x-www-form-urlencoded: schema: $ref: '#/components/schemas/AnswerDocumentUploadRequest' multipart/form-data: schema: $ref: '#/components/schemas/AnswerDocumentUploadRequest' required: true responses: '201': content: application/json: schema: $ref: '#/components/schemas/RequestToClientPublic' examples: SuccessfulUploadResponse: value: id: b2c3d4e5-f6a7-5e44-9f0a-d8e9f0a1b2c3 href: >- https://api.paywise.de/v1/mandates/5600672e-2bfa-488c-b23a-460c1dd1f833/requests-to-client/b2c3d4e5-f6a7-5e44-9f0a-d8e9f0a1b2c3/ mandate: id: 5600672e-2bfa-488c-b23a-460c1dd1f833 href: >- https://api.paywise.de/v1/mandates/5600672e-2bfa-488c-b23a-460c1dd1f833/ reference_number: K25-8Q114 title: Dokumente angefordert description: >- Wir benötigen eine Kopie der Originalrechnung zur Prüfung. allowed_answer_types: fileupload file_attachments: [] answered: true answer: id: c3d4e5f6-a7b8-6f55-0a1b-e9f0a1b2c3d4 text: Anbei die angeforderten Dokumente. additional_comment: null files: - id: d4e5f6a7-b8c9-0123-4567-890abcdef012 filename: rechnung_RE2023001.pdf mime_type: application/pdf file_size: 234567 created: '2025-11-16T14:22:00Z' created: '2025-11-15T08:00:00Z' answered_at: '2025-11-16T14:22:00Z' summary: Successful upload response description: The request after successfully uploading a document description: '' security: - tokenAuth: [] - tokenAuth: [] components: schemas: AnswerDocumentUploadRequest: type: object description: |- Serializer for uploading documents to an answer. Used for the separate document upload endpoint. properties: file: type: string format: binary description: 'Document file to upload. Allowed formats: PDF, JPEG, PNG.' required: - file RequestToClientPublic: type: object description: |- Main serializer for RequestToClient in the Public API. Provides full detail view for GET requests. properties: id: type: string readOnly: true href: type: string readOnly: true mandate: allOf: - $ref: '#/components/schemas/MandateMinInfoForRequest' readOnly: true title: type: string readOnly: true description: type: string readOnly: true nullable: true allowed_answer_types: readOnly: true oneOf: - $ref: '#/components/schemas/AllowedAnswerTypesEnum' - $ref: '#/components/schemas/NullEnum' file_attachments: type: array items: $ref: '#/components/schemas/FileAttachmentPublic' readOnly: true answered: type: boolean readOnly: true answer: allOf: - $ref: '#/components/schemas/AnswerPublic' readOnly: true created: type: string format: date-time readOnly: true answered_at: type: string format: date-time nullable: true readOnly: true required: - allowed_answer_types - answer - answered - answered_at - created - description - file_attachments - href - id - mandate - title MandateMinInfoForRequest: type: object description: Minimal mandate info for RequestToClient responses. properties: id: type: string format: uuid href: type: string readOnly: true reference_number: type: string required: - href - id - reference_number AllowedAnswerTypesEnum: enum: - yes-no - yes-no-dontknow - fileupload - yes-no-freetext-on-no - yes-with-date-no-freetext-on-no - dynamic-form description: |- * `None` - --------- * `yes-no` - Ja/Nein * `yes-no-dontknow` - Ja/Nein/Weiß nicht * `fileupload` - Freitext + Dateiupload * `yes-no-freetext-on-no` - Ja/Nein + Freitext bei Nein * `yes-with-date-no-freetext-on-no` - Ja + Datum / Nein + Freitext * `dynamic-form` - Dynamisches Formular NullEnum: enum: - null FileAttachmentPublic: type: object description: |- Serializer for file attachments (on RequestToClient) with download URLs. Used for schema generation and response formatting. properties: id: type: string format: uuid description: Unique UUID identifier of the file attachment filename: type: string description: Original filename of the attachment mime_type: type: string description: MIME type of the file (e.g., application/pdf, image/jpeg) file_size: type: string readOnly: true description: File size in bytes download_url: type: string readOnly: true description: Secure download URL for the file required: - download_url - file_size - filename - id - mime_type AnswerPublic: type: object description: |- Read-only serializer for displaying answers. Shows text, additional comment, and uploaded files. properties: id: type: string readOnly: true text: type: string readOnly: true nullable: true additional_comment: type: string readOnly: true nullable: true files: type: array items: $ref: '#/components/schemas/AnswerFilePublic' readOnly: true created: type: string format: date-time readOnly: true required: - additional_comment - created - files - id - text AnswerFilePublic: type: object description: |- Serializer for files attached to an Answer (UploadedDocument model). Read-only, shows metadata about uploaded answer documents. properties: id: type: string format: uuid description: Unique UUID identifier of the uploaded document filename: type: string description: Original filename of the document mime_type: type: string description: MIME type of the file file_size: type: string readOnly: true description: File size in bytes required: - file_size - filename - id - mime_type securitySchemes: tokenAuth: type: http scheme: bearer ````