Nick

Sorry about the late response.

I'm glad you replied, because it is CLIENT_VIEW.

The error I am getting is CL_REF does not accept NULL values, but the parameters I am using are nothing to do with CL_REF, so it can't be them.

The view is using about 3/4 tables, and the error message won't display which table is having the problem.

Any ideas?

Thanks
Kev