Trying to edit or create a user in YaST returns error "More then one main domain."

When attempting to add or edit a LDAP user in YaST2 the following error is returned: "More then one main domain."

This error message is referring to mail domains. There is more than one mail domain set to the type "main."

To resolve this issue go to YaST2, Network Services, Mail Server, then select Mailserver Domains on the left and change the types of domains so that you only have one with the type main.