"invalid use of null"

[WaldenK]

I'm trying to pull up my receivables aging report in Access, and it tells me
"invalid use of null."

What can I do to fix this thing?

 

[Allen Browne]

First step is to understand what caused it.

See:
Common errors with Null
at:
http://members.iinet.net.au/~allenbrowne/casu-12.html