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latestOpenAPI 3.0.42026-08-104969330.3 KBUpload a file to a case
Uploads a file and attaches it to a case. Mirrors the file upload action available in the Partner portal.
Access: Collection partners only. Managing partners are rejected.
Status gate: Allowed on all non-Merged statuses, including Closed. Only Merged cases are rejected.
File requirements:
- Maximum size: 25 MB
- Allowed extensions: .pdf .doc .docx .xls .xlsx .jpg .jpeg .png .txt .zip .csv .eml
DocumentType (optional):
- OriginalInvoice — the original invoice document
- DebtorDocuments — documents provided by the debtor
- CreditorDocuments — documents provided by the creditor
- PartnerDocuments — documents provided by the collection partner
- DemandLetter — formal demand letter
- Miscellaneous — other supporting documents
The file is immediately visible to the creditor.
Path parameters
Headers
Optional idempotency key (max 255 characters) for safely retrying this request. If a previous request used the same key with an identical body, the original terminal response is replayed verbatim. Reusing the key with a different body returns 422 with Type: "IdempotencyConflict". Field-level 400 validation errors are not stored, so you may fix the request and retry with the same key.
Response
File uploaded successfully