RFC problem with GOS_ATTACHMENT_LIST_POPUP: I try to call up the SAP function module  "GOS_ATTACHMENT_LIST_POPUP" which displays the attachments for a given object. When I test this in transaction SE37 it works fine, but the Call in my script aborts with "RFC_ERROR_SYSTEM_FAILURE". What could be the reason?
Add the "-dialog" option in your Call statement. Since this function module displays a popup window the RFC needs to be connected to SAP GUI, which normally is not the case, but can be triggered with the "-dialog" option.