On ARIS Designer for SAP 7.2.2

I have two accounts. A & B

while trying to unlock a model with account A,  I get this message

"Organizational chart: Locking/Unlocking 'Model 1" failed because the item has been opened for editing by 'B'.

How can I close definitely Model 1 with account B? Obviously I have already tried to close all model and to exit ARIS while logged in account B without any effect.

Thank you for your help.



Tags: ARIS for SAP