Re: application/octet-stream error using HTTP azure AD connect to add members to a marketing list in dynamics365
Hi @Anonymous ,
Please ensure following steps are done :
1. List should be static , should not be locked(Locked --> No), Targeted At field should be contact
2. Use Perform an unbound action from CDS (current environment) connector
3. Put the following values in that :
List id : Guid of the list that you want to add members to.
Members : Array , so if you are adding single contact just use

Thanks