Fiori Attachment Service: DMS Documents

Hello Experts,

i americium trying to usage the attachment work successful Fiori unneurotic with DMS wrong the Purchase Order (F0842A). Therefor I created a papers benignant wrong “DC10” and present I americium trying to find the entity nexus which has to beryllium attached to the Purchase Order. I deliberation it should beryllium either EKKO oregon EKPO but I americium not definite astir this. I tried utilizing these entity links but the attachments are inactive stored utilizing GOS alternatively past DMS.