Enum describing possible feed attribute reference errors.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/errors/feed_attribute_reference_error.proto)

| Enums ||
|---|---|
| ## `CANNOT_REFERENCE_REMOVED_FEED` | A feed referenced by ID has been removed. |
| ## `INVALID_FEED_ATTRIBUTE_NAME` | There is no feed attribute in an enabled feed with the given name. |
| ## `INVALID_FEED_NAME` | There is no enabled feed with the given name. |
| ## `UNKNOWN` | The received error code is not known in this version. |
| ## `UNSPECIFIED` | Enum unspecified. |