add request servlet API No such user is available in specified DOMAIN

add request servlet API No such user is available in specified DOMAIN

I am trying to add a user that's in my LDAP to my SDP as a requestor but I keep getting the error "No such user is available in specified DOMAIN" and I don't know what information I am missing or what I need to put in specifically for domain in order for it to catch that domain and process.

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