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

The reasons for the target error.

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

| Enumeration | Description |
|---|---|
| `DUPLICATE_MACRO_NAME_FOR_CREATIVE` | Macros associated with a single custom creative must have unique names. |
| `SNIPPET_REFERENCES_MISSING_MACRO` | The file macro referenced in the snippet does not exist. |
| `UNRECOGNIZED_MACRO` | The macro referenced in the snippet is not valid. |
| `CUSTOM_CREATIVE_NOT_ALLOWED` | Custom creatives are not allowed in this context. |
| `MISSING_INTERSTITIAL_MACRO` | The custom creative is an interstitial, but the snippet is missing an interstitial macro. |
| `DUPLICATE_ASSET_IN_MACROS` | Macros associated with the same custom creative cannot share the same asset. |
| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |