Enum describing possible asset group signal errors.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v24/errors/asset_group_signal_error.proto)

| Enums ||
|---|---|
| ## `AUDIENCE_WITH_WRONG_ASSET_GROUP_ID` | The asset group referenced by the asset group signal does not match the asset group referenced by the audience being used in the asset group signal. |
| ## `CANNOT_REMOVE_ALL_SIGNALS` | The asset group signal cannot be removed because it is the last one in the Local Services Ads PMax asset group. |
| ## `SEARCH_THEME_POLICY_VIOLATION` | The search theme requested to be added violates certain policy. See <https://support.google.com/adspolicy/answer/6008942>. |
| ## `TOO_MANY_WORDS` | The number of words in the Search Theme signal exceed the allowed maximum. You can add up to 10 words in a keyword. See <https://support.google.com/google-ads/answer/7476658> for details. |
| ## `UNKNOWN` | The received error code is not known in this version. |
| ## `UNSPECIFIED` | Enum unspecified. |