Enum describing possible mutate 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/mutate_error.proto)

| Enums ||
|---|---|
| ## `EU_POLITICAL_ADVERTISING_DECLARATION_REQUIRED` | Mutates are generally not allowed if the customer contains non-exempt campaigns without the EU political advertising declaration. |
| ## `ID_EXISTS_IN_MULTIPLE_MUTATES` | Cannot mutate the same resource twice in one request. |
| ## `INCONSISTENT_FIELD_VALUES` | The field's contents don't match another field that represents the same data. |
| ## `MUTATE_NOT_ALLOWED` | Mutates are not allowed for the requested resource. |
| ## `OPERATION_DOES_NOT_SUPPORT_PARTIAL_FAILURE` | This operation cannot be used with "partial_failure". |
| ## `RESOURCE_ALREADY_EXISTS` | The resource being created already exists. |
| ## `RESOURCE_DOES_NOT_SUPPORT_VALIDATE_ONLY` | This resource cannot be used with "validate_only". |
| ## `RESOURCE_NOT_FOUND` | Requested resource was not found. |
| ## `RESOURCE_NOT_IN_GOOGLE_ADS` | The resource isn't in Google Ads. It belongs to another ads system. |
| ## `RESOURCE_READ_ONLY` | Attempt to write to read-only fields. |
| ## `UNKNOWN` | The received error code is not known in this version. |
| ## `UNSPECIFIED` | Enum unspecified. |