While updating anything in SAP, the events do not integrate to iVend HO and also don't appear in the Integration Monitor. However, it's working fine from Enterprise to SAP.
6.5 Update 6
There might be a case that Notification SP in SAP had commented on part of iVend which was causing the issue.
Once we un-commented that code issue got resolved.
This can be checked in the Stored Procedures of SAP db.
N/A