AI-generated Key Takeaways
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          This content describes an enum detailing possible errors that can occur with custom audiences. 
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          The enums cover errors related to naming, usage, existence, member details, policy violations, and type changes. 
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          Errors include issues like duplicated names, trying to remove an audience in use, or adding duplicate members. 
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          Policy violations and invalid type changes are also included in the list of possible errors. 
Enum describing possible custom audience errors.
| Enums | |
|---|---|
| 
 | Enum unspecified. | 
| 
 | The received error code is not known in this version. | 
| 
 | New name in the custom audience is duplicated ignoring cases. | 
| 
 | Cannot remove a custom audience while it's still being used as targeting. | 
| 
 | Cannot update or remove a custom audience that is already removed. | 
| 
 | The pair of [type, value] already exists in members. | 
| 
 | Member type is invalid. | 
| 
 | Member type does not have associated value. | 
| 
 | Custom audience contains a member that violates policy. | 
| 
 | Change in custom audience type is not allowed. |