Enum describing possible feed item set errors.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/errors/feed_item_set_error.proto)

| Enums ||
|---|---|
| ## `CANNOT_CLEAR_DYNAMIC_FILTER` | 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. |
| ## `CANNOT_CREATE_DYNAMIC_FILTER` | 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. |
| ## `DUPLICATE_NAME` | FeedItemSets duplicate name. Name should be unique within an account. |
| ## `DYNAMIC_FILTER_INVALID_CHAIN_IDS` | Chain ID specified for AffiliateLocationFeedData is invalid. |
| ## `FEED_ITEM_SET_REMOVED` | The given ID refers to a removed FeedItemSet. |
| ## `INVALID_FEED_TYPE` | FeedItemSets can only be made for location or affiliate location feeds. |
| ## `UNKNOWN` | The received error code is not known in this version. |
| ## `UNSPECIFIED` | Enum unspecified. |
| ## `WRONG_DYNAMIC_FILTER_FOR_FEED_TYPE` | 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. |