AI-generated Key Takeaways
- 
          The content describes various errors related to custom interests. 
- 
          Errors include issues with duplicate names, missing parameters, invalid types, and attempting to remove or change custom interests while they are in use. 
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          Some errors indicate unknown codes or unspecified issues. 
Enum describing possible custom interest errors.
| Enums | |
|---|---|
| 
 | Enum unspecified. | 
| 
 | The received error code is not known in this version. | 
| 
 | Duplicate custom interest name ignoring case. | 
| 
 | In the remove custom interest member operation, both member ID and pair [type, parameter] are not present. | 
| 
 | The pair of [type, parameter] does not exist. | 
| 
 | The pair of [type, parameter] already exists. | 
| 
 | Unsupported custom interest member type. | 
| 
 | Cannot remove a custom interest while it's still being targeted. | 
| 
 | Cannot mutate custom interest type. |