**Service** [CreativeService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeService.CreativeTemplateOperationError.Reason) [CreativeSetService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeSetService.CreativeTemplateOperationError.Reason) **CreativeTemplateService** [LineItemCreativeAssociationService](https://developers.google.com/ad-manager/api/reference/v202605/LineItemCreativeAssociationService.CreativeTemplateOperationError.Reason) **Dependencies** [CreativeTemplateOperationError](https://developers.google.com/ad-manager/api/reference/v202605/CreativeTemplateService.CreativeTemplateOperationError) ▼ **CreativeTemplateOperationEr...**

The reasons for the target error.

*** ** * ** ***

Namespace
:
    `https://www.google.com/apis/ads/publisher/v202605`

| Enumeration | Description |
|---|---|
| `NOT_ALLOWED` | The current user is not allowed to modify this creative template. |
| `NOT_APPLICABLE` | The operation is not applicable to the current state. (e.g. Trying to activate an active creative template) |
| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |