# 400 error - invalid merchant
source: https://developer.mastercard.com/automatic-billing-updater/documentation/code-samples/httpstatus400-invalid-merchant/index.md

```json
{
   "Errors":{
      "Error":[
         {
            "Source":"Validation",
            "ReasonCode":"INVALID_PARAM",
            "Description":"Invalid or Unavailable Merchant and/or Aggregator information. Please check",
            "Recoverable":false,
            "Details":"Invalid Params"
         }
      ]
   }
}
```