# POST /Indoor/api/addDocumentByCaseNumber

**Resource:** [Disputes and chargebacks](../resources/Disputes-and-chargebacks.md)
**Used when an ongoing dispute case requires adding a new document to the case record**
**Operation ID:** `addDocumentByCaseNumber`

Adds one or more document references to an existing case in the core banking system using the provided case number. The service accepts channel information, case number, and a list of DMS document references, and forwards them to the BKM batch service for processing. This operation performs a state-changing action by attaching documents to the specified case.

## Request Body

Add Document By Case Number Request

**Required:** Yes

**Content Types:** `application/json`

**Schema:** [AddDocumentByCaseNumberRequest](../schemas/Add/AddDocumentByCaseNumberRequest.md)

## Responses

| Status | Description |
|--------|-------------|
| 200 | Success |
| 400 | (reference) |
| 404 | (reference) |
| 500 | (reference) |

