Where can I get user documentation for eDoc?

The User Guide for eDoc is here.

Why do I get surname/student ID not found even when records are in SITS?

There is an overnight refresh process from SITS to BPM (5.30 AM) making students available in BPM. If that process fails because of some reason, students will not be available even if they are present in SITS. You may get this error in that case as BPM refers to its own copy rather than SITS to check students. BPM also run a process at 7.50 AM every morning where emails are sent detailing them about new documents uploaded in BPM based on student applications (courses).