I am trying to add a colleague to a GitLab project of the company where I am Maintainer but I have problems adding the user to a project: I go to my project and select Project information > Members . In the Invite member tab, under GitLab member or Email address, enter the user name or email address. I select a role. And I send it but I get a reply from GitLab that: The member's email address is not allowed for this project. Check with your administrator. What should the administrator do?

It seems that the domain of your colleague's email is restricted using Restrict group access by domain feature. What should the administrator do? They should go to Settings > General and verify that Restrict membership by email field contains the correct set of domains.

"The member's email address is not allowed for this project. Check with your administrator" when adding a partner to a project where I am Mantainer

I am trying to add a colleague to a GitLab project of the company where I am Maintainer but I have problems adding the user to a project:

I go to my project and select Project information > Members.
In the Invite member tab, under GitLab member or Email address, enter the user name or email address.
I select a role.

And I send it but I get a reply from GitLab that:

The member's email address is not allowed for this project. Check with your administrator.

What should the administrator do?

"The member's email address is not allowed for this project. Check with your administrator" when adding a partner to a project where I am Mantainer

1 Answers