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Get Single Collection Advanced

GET 
/api/collections/getcollectionadvanced/:id

Tier: Internal — subject to change without notice.

Gets a single Collection by id, with each extended property's referenced entities expanded to their full Detail DTOs rather than summaries.

An unknown or deleted {id} currently returns an unhandled server error (500) rather than the 400/empty-array behaviour of CollectionController.GetSingleCollection(...) — verified live 2026-07-03; this endpoint does not null-check the collection before expanding its extended-property list. See the known-issues register.

Request​

Responses​

Returns the matching Collections.CollectionAdvancedDetailDto.