Unable to manually add a SAML user as an organization login to ArcGIS Online when the IDP username contains an apostrophe.

Workaround

Turn on automatic account creation for SAML logins in the organization and have the user sign up using this option.

Add the user manually with the ArcGIS API for Python with the gis.user.create() method, and set the idp_username parameter manually:

user1 = gis.users.create(username = 'test_user@domain.com_org_url_key',

               password = 'password',

               firstname = 'User',

               lastname = 'Test',

               email = 'test_user@domain.com',

               role = 'Viewer',

               idp_username = "test'user@domain.com",

               user_type = 'Viewer',

               provider = 'enterprise')

Steps to Reproduce