There is a possibility to attach incoming messages to a contract without further processing. The incoming message is for information and does not lead to any booking or correspondent relevant transactions.
To attach an incoming message to a advance contract, BPTATT transaction is used.
Select it from the menu item[Financing Products -> Advance -> Other-> Attach Document].
When you have made your changes, click on the ( ) Save function to save all the the data entered in the transaction to the database.