Filtering records by tags is possible, but not using an enumeration of values. ABRA Flexi cannot handle syntax like stitky in (1, 2, 3) — it will fail with a 500 error indicating a syntax error in the database query.
Solution using OR
Instead of an enumeration, use the logical operator or and list each tag separately:
GET /c/{firma}/adresar/(stitky='code:VIP' or stitky='code:DULEZITE').xml
A single tag is filtered the same way, just without or:
GET /c/{firma}/adresar/(stitky='code:DULEZITE').xml
ℹ️ Tags are stored on the record as a text property stitky, so filtering is done using the value code: with the tag's abbreviation. The list of existing tags is returned by the stitek record.
💡 Don't forget to encode the filter — spaces around or should be encoded as %20. Details on writing filters are summarized in the article Filtering Records.