System allowing consumable budget to be more than current budget during budget transfer
I am facing a very strange situation where consumable budget is more than current budget.This is ocurring during budget transfer via FMBB using prepost and then posting through work flow .
Current budget 300.000
Consumable budget 150.000
Consumed budget 7.000
Available budget 143.000
I Prepost two budget tranfer documents documents for 150.000 each and eventually post.(If I try to prepost one document for 300.000 I get an error "The budget amount is not sufficient for release " which is okay).But if I split the amount into two and prepost they go through without any error.
Notice current budget is now zero.
If I post the document instead of preposting , the system is checking fine and throwing an error after posting the first document but I can't post directly in production because we are using workflow.
I am missing any configuration ? Because this seems very illogical