Hi There,
I have set up some code to be able to add a single user to multiple groups in arcgis online. This works fine when using the add_users() method for an internal user but when I try to do it for an external user with the invite_users() method it returns the value 'True' but it doesn't actually do anything. I have sent invitations to the same user using the button on the group page so the user and group are setup correctly.
Resolved this issue but putting the username into an array so it should be userN = ['username'] and then this is accessed in the subsequent code by userN[0]