Error in removing privilege from the user

Hello IDM Experts,

When I am trying to remove privilege (direct assignment type) from the user in IDM UI (IDM 7.2 SP8) then I get

below error

While removing it via custom job in IDM console, I get below error.

I ran the query  for user and privilege relationship and everything seems to be consistent.

select mcThisMskey, mcOtherMskey,mcExecState,mcExecStateHierarchy,mclinktype, mcLinkState,mcOrphan from mxi_link where mcthismskey = 1639496 and mcothermskey = 7989

Query result screenshot below:

Error shows referenced value does not exist . This privilege is assigned directly to user and exist in database with OK status.

Could you please let me know why this issue occurs and how to resolve this issue ?

Thanks & Regards,

Pradeep