In article <mgk0s0$sl6$
1...@dont-email.me>,
knob...@arcor.de says...
You correctly assume that I use an older format in Access 2013, Ulrich.
I usually do my databases in Access 2003 format.
I'm probably uncommonly thick, and certainly inexperienced in Access
tricks. So forgive me for asking: how do I recognise empty cells?
All fields on the form exist in the relevant table, so that can't be
what is meant by the error message.