there are canned assembler reports that shows all approvers in a approver group.

Document ID : KB000012698
Last Modified Date : 14/02/2018
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Question:

When running an approver group report that shows the users in the approver group;  is there anyway to know 

if the userid ids are still valid?

Answer:

Approver group reports just produce information from that approver group and the 

users in that group.  The userids in the group can be valid or obsolete.  It is 

up to the Endevor Administrator to clean up the approver groups that have

obsolete userids.