Accounting 2 cost types, each one in a different ledger

Hi all.

I have a weird situation.

Once I worked in a customer who has 2 cost types, Standard (STD) and Average (PMAC). Each one of these cost methods were assigned to specifc calendar and specific ledgers.

So we understood that Oracle EBS OPM has the feature to process and account 2 methods into different ledgers any way, any time we want.

That customer is OK, working fine and has no problems. The customer process the secondary ledger to final post their results to the matrix (using STD) and after that starts to process PMAC method to primary ledger.

Now I'm in another customer who has the same requirement, but here they run the STD method from secondary ledger and do the final post. After that when they run the cost process for the primary ledger (PMAC method) everything goes well until the execution of OPM Pre Processor.