Microsoft graph api- Planner permissions

Question

I am building an app where anybody in my organization can create planner task under a specified plan.

I am using Azure AD v2 endpoints for getting access token:

https://login.microsoftonline.com/common/oauth2/v2.0/authorize
https://login.microsoftonline.com/common/oauth2/v2.0/token

And using that access token to make POST request to following endpoint:

https://graph.microsoft.com/v1.0/planner/tasks

I have registered my App on: https://apps.dev.microsoft.com And given necessary delegated and application permissions EDIT: ie Group.ReadWrite.All (along with many others)

I am(having admin rights) able to create planner tasks using the API calls but no one else in the organization can. User gets this error message:

Need admin approval
Planner Task App

Planner Task App needs permission to access resources in your organization that 
only an admin can grant. Please ask an admin to grant permission to this 
app before you can use it.

I know that this user account has required permissions (because when using graph explorer api calls with same account, it works) so the problem lies in App permissions. Any help is highly appreciated.

EDIT: Bearer token for Admin (where app successfully creates a planner task):

eyJ0eXAiOiJKV1QiLCJub25jZSI6IkFRQUJBQUFBQUFCSGg0a21TX2FLVDVYcmp6eFJBdEh6MmtUREpfbzduN3lETXJvVzhkUjR1YWZVZ050OEctbmhuNm5HalpvN1p5SDNqNEl0a3E5N3lFX091cEI2eEdITVVpcWpfeFVkdkFWdmx2SVgtV3FlSmlBQSIsImFsZyI6IlJTMjU2IiwieDV0IjoiRlNpbXVGckZOb0Mwc0pYR212MTNuTlpjZURjIiwia2lkIjoiRlNpbXVGckZOb0Mwc0pYR212MTNuTlpjZURjIn0.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.T50Ae8vFtdobi4GFHL4o-rqU9sbNYqhhV0KRcA7HYzUI-4M4Latma8kJ7ssqx4djdQigPnjJTCVOg9oFBXE_iSWRPbZbRGbfuvwj9iPePCtzCERZwWn0bHOltk0o0LFWW1UoplUsMJJgxoZyeMlruWBxOIQXOQxRnHlnmMLzU-Nwr2Ex87hAMnFPBN7uD9x7WIJtc3vO-sIecKLmwKgchfbI8vIXMOgs1DsVByWBljHSN-DJ9FwxklS_r-Hco9x6g5SPJ_gXfANL8KXXK51D1Xnc7TKd3IebnjermycCKw5t-ViNPlX0r-og4iKsT2oo_k1UTi5-TO2mMIKPXMjirQ

Even after Admin has given consent to the app using (https://login.microsoftonline.com/common/adminconsent?client_id=my-app-id&state=12345&redirect_uri=https://localhost/myapp), non-admin user gets this:

Gopal Zadafiya Gopal Zadafiya · Accepted Answer · 2018-04-06T05:27:20

As you have mentioned that you are adding planner task not just reading data, you have to grant permission Group.ReadWrite.All accordingly. Please check the permission and confirm about this.

ref: https://developer.microsoft.com/en-us/graph/docs/api-reference/beta/api/planner_post_tasks

Microsoft graph api- Planner permissions

2 Answers