# Invalid Project Configuration
source: https://developer.mastercard.com/mastercard-developers-api/documentation/errors/invalid-project-config/index.md

This error occurs when some configuration of your project is invalid.

### Solution {#solution}

This error can be returned if your commercial countries are not supported by your project services. Ensure there's no mismatch between the commercial countries you've specified in your request and those that are supported by your service.

### API Error Response {#api-error-response}

**HTTP code 409**

```JSON
{
  "Errors": {
    "Error": [
      {
        "Source": "DEVELOPERS_API",
        "ReasonCode": "INVALID_PROJECT_CONFIG",
        "Description": "Invalid project configuration",
        "Details": "The project contains one sanctioned country in the selection of countries",
        "Recoverable": false
      }
    ]
  }
}
```

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