Hi Wagner,
Yes, it is clear.
You need settle from WBS 2 (AVAC) ---> WBS1(AVAC) --> AuC
The assigned value ( the consumed bUdget) in transfer between WBS 2 to WBS1 because the receiver has budget availability control ( and it is not transfer to the AuC because this object doesn't have budget availability control)..
To prevent the assigned value is transferred to WBS1 you need to do the internal settlement WBS2 --> WBS1 with a specific cost elements and these cost elements exclude from the budget control.
Example you haveWBS2 posting in acount 3XXXXX1(10$)---> settle in account 8XXXXX1
Posting in account 3XXXXX2(20$) ---> settle in account 8XXXXX2
Accounts 8XXXXX1 & 8XXXXX2 are excluded from the budget control
After settlement WBS2--> WBS1 you will have
WBS2: 10$ in account 3XXXXX1 (assigned)
20$ in acoount 3XXXXX2 ( assigned)
-10$ account. 8XXXXX1 ( not assigned)
-20$ account 8XXXX2 ( not assigned)
WBS1 10$ account. 8XXXXX1 ( not assigned)
20$ account 8XXXX2 ( not assigned)
You will have 30$ in the WBS 1 to settle to the AuC but the assigned cost remains in the WBS2.
I hope this can be useful to solve your problem