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NS_E_INVALID_INPUT_AUDIENCE_INDEX
The audience index is outside the current collection
NS_E_INVALID_INPUT_AUDIENCE_INDEX (0xC00D1B9E) is an indexing/topology error, not a media-data failure. A caller or serialized profile refers to an audience position that is no longer present.
Re-enumerate instead of trusting cached indexes
Capture audience count, the requested index, profile version, and the operation that consumes the index. Pay special attention to code that caches indexes before audiences are inserted, removed, or reordered.
Correction
Resolve the target audience from the current profile and pass a valid current index. If profile editing intentionally removed the audience, update all references to it rather than recreating an unrelated audience just to satisfy the number.
Technical references
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