# Set Transaction Data

**POST /transactions/{transactionId}/data**

Sets the data for a given transaction. The `mode` parameter controls whether supplied data is merged with existing data (default) or replaces it entirely.


## Servers
- Production: https://ws.zipformplus.com/api (Production)
- Staging/QA: https://api.pre.zipformplus.com/api (Staging/QA)


## Authentication methods
- Context auth


## Parameters

### Path parameters

- **transactionId** (string(uuid))
  Transaction GUID


### Query parameters

- **mode** (string)
  Merge (default) adds to existing data; Replace removes existing data and sets the new values.


### Body: application/json (object)

- ***** (string)



## Responses
### 200
Transaction data updated successfully

### 401
Unauthorized

### 404
Transaction not found


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