AI-generated Key Takeaways
- 
          The document describes an enum detailing possible errors related to Feed Item Sets. 
- 
          Errors cover issues such as referencing a removed FeedItemSet, inability to modify dynamic filters, invalid feed types, duplicate names, and incorrect dynamic filter usage for the feed type. 
- 
          Specific errors are also mentioned for invalid chain IDs in dynamic filters for AffiliateLocationFeedData. 
Enum describing possible feed item set errors.
| Enums | |
|---|---|
| 
 | Enum unspecified. | 
| 
 | The received error code is not known in this version. | 
| 
 | The given ID refers to a removed FeedItemSet. | 
| 
 | The dynamic filter of a feed item set cannot be cleared on UPDATE if it exists. A set is either static or dynamic once added, and that cannot change. | 
| 
 | The dynamic filter of a feed item set cannot be created on UPDATE if it does not exist. A set is either static or dynamic once added, and that cannot change. | 
| 
 | FeedItemSets can only be made for location or affiliate location feeds. | 
| 
 | FeedItemSets duplicate name. Name should be unique within an account. | 
| 
 | The feed type of the parent Feed is not compatible with the type of dynamic filter being set. For example, you can only set dynamic_location_set_filter for LOCATION feed item sets. | 
| 
 | Chain ID specified for AffiliateLocationFeedData is invalid. |