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Hi
Iam trying to add the External user to SharePoint Group as shown in below image but having some issues like Internal server Error.
Please help how to rectify this.
Thanks.
Hi @Durgadevi,
Is your guest user already part of the tenant (listed in the User > Guest Users section of M365 Admin Centre)?
Did you also use the correct loginName format? It should look something like below (before #EXT# the external e-mail address is used, after the m365 domain)
i:0#.f|membership|test_contoso.com#EXT#@contoso.onmicrosoft.com
Did you also enable external sharing for the site itself (and if so, which option did you use?)
If that is all the case you can use their loginName in a POST request like below. Use the sitegroup with id 5, which is the members group.
Below is an example.