In that case, SAP ERP HCM Payroll North America
could have been the appropriate discussion forum.
As mentioned by Jagan Gunja, going through the Payroll log to identify where that V0 assignment is generated could help you, as some are generated through standard Payroll Functions (like the Functions processing Benefits Infotypes will generate the type B assignment) while others are generated through Custom PCRs (such as the type D or T assignments).