exec dbo.[sp_Inv_AeX_SWD_Execution_Summary_clean] '1c1eeaa9-6d95-424b-acfd-a841148bc42d'
The condition occurs when deleting or inserting into the Inv_*_Summary tables, causing deadlocks in the database.
This issue is resolved in Rollup 6 (R6) for Notification Server 6.0 SP3. Release notes can be found in article 34317.
Notification Server 6.0.6074 (SP3) R3
Software Delivery Solution 6.1 SP2