REST API call, Get Lead Activities, is returning 603 error
Error 603 refers to 'access denied' where authentication is successful but the user doesn’t have sufficient permission to call this API. Additional permissions may need to be assigned to the user role.
In order to make a Get Lead Activities REST API call with the API user, the API role of the user must be modified to have permissions to 'Read-Only Activity' or 'Read-Write Activity'. If you use Workspaces and Partitions, make sure the API User has the necessary access.
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