Entity missing in MAP_DATA_2API and MAP_DATA_2STA.

Hello.

After adding new UIBB ( based on custom entity ) I would like to map data to API and to STA. I assume ( as stated in https://www.sap.com/documents/2015/07/d6928e5d-5b7c-0010-82c7-eda71af511fa.html ) it can be achieved with MAP_DATA_2API and MAP_DATA_2STA methods, however while debugging I don't see my ENTITY in iv_entity variable. It seems like it's not taken in account in none of them.

Any clues?

Thank You.