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Hi,
I'm trying to use this API https://learn.microsoft.com/en-us/graph/api/channel-list-members?view=graph-rest-1.0&tabs=http
with authorization code flow
but when trying to add ChannelMember.ReadWrite.All permission I get this error:
what should I do?
if I add only application permission I get this error:
Thanks!
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(112.00000000000001, 24%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJM%3C/text%3E%3C/svg%3E)
Teams tag is mainly focused on the general issue of Microsoft Teams troubleshooting. According to your description, your question is related to Teams API development. So I will also add Teams development tag to your thread. Thanks for your understanding!
I don't seem to have any issues adding ChannelMember.ReadWrite.All delegate permissions, perhaps try with a different admin account? Which "flavor" of M365 are you on, is it the global multi-tenant one or Gov/China/something else?
No, I have only one admin, and I’m not using a global, multi-tenant, or Gov/China environment. The error is from the portal, so you should be able to identify the problem.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(176, 78%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EPM%3C/text%3E%3C/svg%3E)
itay4 If you are using the Authorization Code Grant flow, you should be using Delegated permissions (which you are already doing) and according to documentation the permissions should be:
We tried running this API only by providing ChannelMember.Read.All permission and are able to fetch the members of that channel. Could you please try that and let us know if that works?