Solved
Brapi.Utilities.ExecuteDatamanagementSequence
The Function in my rule : Brapi.Utilities.ExecuteDatamanagementSequence run the sequence in Background and allows me to do further operation in BR even before the step is complete. Is this the expec...
The Execute* call should typically block, if that's not the case you should talk to Support.
Start* and Queue*, on the other hand, will not block.
