Enable VMS vehicle For DBM

Dear Experts,

       I am a beginner in SAP VMS. I am trying to enable a vehicle created in VMS for DBM with the action QDBM. The system is throwing an error " Elementary actions for the interlinked action is not executed"

I checked the action QDBM and it has two interlinking QVED and QIOG. QVED is defined as an internal action. Kindly let me know of the steps to enable a vehicle for DBM.

Thanks for looking into the post.

Manimegalai