If you are posting a proportion of your vendor invoice to your sub-contractor’s blocked account, you need to define a new payment block reason for your company code. You do this in case the system has to block any open vendor items because one or more of your sub-contractor’s certificates has expired.

To define your new payment block reason, in Customizing for Financial Accounting, choose Financial Accounting Global Settings ® Chain Liability ® Define Payment Block Reasons.

When you have defined your payment block reason, you need to include it in a chain liability method.

If the system subsequently blocks any open vendor items when you run report Change Payment Block and Payment Method, it assigns the payment block reason that you have just defined to the blocked item(s).