Event Linkage error reported by SWE5

[Robin Sahasranam]

Hi Webflow experts,
 
When I run the Check Event Linkages transaction (SWE5) in 4.6c, it shows a few
errors, one of which is ' Receiver XXX does not exist'. This particular event is
linked to  Receiver FM which does exist and is active. In fact I can drill down
to the offending FM from the list. We use this custom function to release a
parked document. The event linkage table was created in 4.0b and I am getting
this error in the upgraded 4.6c Test system. I have not seen any event linkage
error in 4.0b production or while testing in 4.6c for this event linkage.
 
I am grateful for your help in figuring out why this error is being reported and
how I can eliminate it. Thanks in advance.
 
The entry in the Event Type Linkages table (SWE2) for this  link is as follows:
 
Object type     FIPP
Event           CREATED
Receiver type   WF_RLS_SET
 
Event Type Linkages
 Receiver FM                     Z_WBIX_WF_RELEASE_SET
 Check function
 Receiver type FM
 Destination
 
Type linkage active    is checked
Enable event queue     is not checked
 
 
Behavior upon error feedback   System presetting
Receiver status                No errors
 
Regards
Robin Sahasranam