# 400 error - cannot subscribe to network token
source: https://developer.mastercard.com/automatic-billing-updater/documentation/code-samples/httpstatus400-token-account-not-eligible-for-abu-push/index.md

```json
{
   "Errors":{
      "Error":[
         {
            "Source":"Validation",
            "ReasonCode":"SUBMISSION_ERROR_TOKEN_VALUE",
            "Description":"Cannot subscribe to a network token value for ABU Push",
            "Recoverable":false,
            "Details":"Invalid Params"
         }
      ]
   }
}
```