Confirm the user name matches the OCLC LDAP Account that was created at https://ldap-accounts.oclc.org/.
Check the CONTENTdm Administration Portal users list to verify the correct user name was added to the Users list.
Note: OCLC LDAP Accounts created after the move to the new WorldCat.org in September 2022 include different character restrictions. If the user name returning the above error contains a special character, it will need to be deleted and recreated without the special character(s). Contact OCLC Support and supply the user name to request this be completed.
See Adding Users