We have one Active Directory Domain and we have some Coworkers (another companies in our office who rent workplaces) which have user accounts in our AD Domain (for access to our service systems).

In the SDP MSP is their AD user accounts must be mapped to a separate Account.

But, I can't add domain to their Account, I get error message " FAILURE :Domain with the same name already. Please provide a different name."

LDAP authentication\Local authentication we don't wont use, because we need map Requester Additional Fields with custom attributes in our Active Directory.

How do we solve this problem?