The Unauthorized Error and Error 403 messages usually indicate that the user has insufficient permissions to run the operation.

The Atlas project roles assigned to the MongoDB Cloud user determine the level of access that a user has to a Realm application in the project:

  • Project Owner: full control of Realm applications within this project

  • Project Read Only: read-only access to Realm applications within this project

See Realm Application Security and Atlas User Access for more information.


For example, a user requires the Project Owner role in order to save changes for a Realm function:

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