BOPF authority: failed to assign authorization field bo_service

[al]

Current project implement BOPF authority checks. when I assign authorization filed bo_service to authorization object the authorization filed could not be selected or find. however I can find it by running tcode su20. 

I already open the bo node authorization check and the root authorization check,  the root authorization check is working but item level check is failed.

could any expert help me or give me a hint  ?   thanks a lot.

[al]

solved.

actvt should be list on the first position.

bo_service should be second one.

its position issue.