SAP Message SMOE_MESSAGE156 - There is a conflict situation for site &1 and subscription with key &2

Diagnosis
You are using the Indirect assignment function of theAdministration Console to assign subscriptions to sites. You are tryingto save your changes. The changes cannot be accepted, because there isstill a conflict situation which has to be resolved.

Procedure
You are still in the Indirect assignment of subscriptions screenof the Administration Console. Since the Administration Console cannotdeliver the subscription name, it seems that the subscription has beendeleted. Start indirect assignment again.