Hi,
If you are using Internal Order in Purchase Order and while doing down payment against Purchase Order, system is also picking Internal Order while processing down payment which cause of errors and posting Down Payment amount on asset while settling Internal Order.
Please follow the steps for not posting down payment to Internal Order.
Check your GL account which is using for Posting Down Payment against Sp. GL Ind. (Alternate GL Account)
Check the field status of that account.
Maker CO/PP Order as suppress field in Additional Account assignments.
Now Internal Order field will be suppress at the time of down payment against Purchase Order and then no down payment will be settle to Asset while settling Internal Order.
Regards
AJ