When a masterdata v2 entity has many schemas, it suffers from indexing problems and some documents are not returned in the search.

1. Check if the entity has multiple schemas (usually +50 schemas). Create a new document, for example, using the field email=test@test.com
2. Search for documents (using _where=email=test@test.com)
3. Check that this document is not returned because it was not indexed.
4. When using the Get Documents route, the document returns normally.

Open a ticket to the team requesting the reindexing of the entity.