Steps taken:
Open DBViewer
Check the relayhealth directmessage log (which is in p:\Pppart\logs) for multiple messages
select * from mrrs where Ref_Direct_Email = 'DISRECTMESSAGEEMAIL.DOMAIN.com '
that returned 2 results showing the DM email is in 2 Referring sources
[pid:9276][tid:245]7/28/2021 4:10:45 PM 15901975897605 Error: Unable to save incoming message id 456686b1-3c46-467e-b96d-495c20aff24b and parent id with header:
To:DIRCETMESSAGEEMAIL.direct.emds.com
From:DISRECTMESSAGEEMAIL.DOMAIN.com
CC:
OnBehalfOf:
Delete the duplicate
*Note if you want a list of DM address in the MRRS in DBviewer you use select Ref_Direct_Email from mrrs