I have a problem when i click on the button "Join" in annotation interface only.
This is the context: in policies an user can't modify an annotation if is not the creator. The user1 create an annotation. The user 2 open this annotation and decide to add an attachment file to the annotation. Normally an custom message error appear, but is not the case. An pop up of CRM appear "upload failure" with description say that can not communicate with Dynamics CRM server.
How can i do to show my custom message instead the CRM message ?