There is a possibility to attach incoming messages to a contract without further processing.
To assign an incoming message to a contract, SCTATT transaction is used. In this transaction, neither correspondence is created, nor data fields are updated.
Select it from the menu item[Other Products -> Syndication -> Syndication Master > 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.