# Update a commission

## Update SubMerchant Commission

> Update the commission (markup\_fee) for a specific SubMerchant.

```json
{"openapi":"3.0.0","info":{"title":"SubMerchant API","version":"v3"},"paths":{"/sub_merchants/{sub_merchant_id}/markup_fee":{"put":{"summary":"Update SubMerchant Commission","description":"Update the commission (markup_fee) for a specific SubMerchant.","parameters":[{"name":"sub_merchant_id","in":"path","required":true,"description":"The ID of the SubMerchant to update.","schema":{"type":"integer"}},{"in":"header","name":"Content-Type","required":true,"schema":{"type":"string","default":"application/json"},"description":"Media type of the body sent to the API."},{"in":"header","name":"X-Date","required":true,"schema":{"type":"string","format":"date-time"},"description":"ISO8601 Datetime with Timezone (yyyy-MM-dd'T'HH:mm:ssZ)"},{"in":"header","name":"X-Login","required":true,"schema":{"type":"string"},"description":"Merchant X-Login API Key."},{"in":"header","name":"Authorization","required":true,"schema":{"type":"string"},"description":"Authorization control hash."},{"in":"header","name":"X-Idempotency-Key","required":false,"schema":{"type":"string"},"description":"Unique idempotency key for ensuring that the same request is not processed more than once."}],"requestBody":{"required":true,"description":"The new commission fee to be applied to the SubMerchant.","content":{"application/json":{"schema":{"type":"object","properties":{"markup_fee":{"type":"number","format":"double","description":"New commission value that will be charged in transactions of the SubMerchant specified in the URL path."}}}}}},"responses":{"200":{"description":"The commission was updated successfully."},"400":{"description":"The request could not be processed due to a client-side error.","content":{"application/json":{"schema":{"type":"object","properties":{"code":{"type":"integer","description":"Error code identifying the specific error."},"description":{"type":"string","description":"A human-readable message providing more details about the error."},"type":{"type":"string","description":"The type of error that occurred."}}}}}}}}}}}
```


---

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