I've deleted and recreated these two BOs a number of times now but I can't get past this problem and I've never seen the issue before. I created boMEI and boMEG and all seems to be normal in terms of generated code however, when I go into Properties and click the RequiredFields collection, I get the attached 'type error'. Can you give me some clue as to what I may have done wrong. All the expected fields appear in the ..Designer.vb file and they appear as properties in ..vb code, e.g. in _SetDefaultValues I can say, for instance, "Me.MEISequ = 0"

Cheers, Peter