Attach file to object in ERP

Hello!

I need to attach file to the business object in ERP. Which options do I have?

More specific: I need to attach PDF file to the QM Notification from MII. This file should be seen as attachment in GOS (Generic Object Services) for this object. Anyone faced task like this? I'm trying to find some usefull remote-enabled GOS FMs for this. It would be wonderfull if there is a way to do it without ABAP.

Best regards,

Petr.