I am using SD5.10 have close to 500 services to each of which I need to relate a set of organisations (15 in number). Is there a quick and reliable way this can be achieved? I have tried using templates but they dont allow adding receiving entities. And it takes ages to relate them manually.
I don't know about quick, but in my experience Data Exchange has been pretty reliable. I use SD4.5, though. Not sure how quick or reliable Data Exchange is on SD5.10. You might want to check the Data Exchange guide here: