Hi again,
I just noticed that your question was about AP, and I was using the AR report for my example. AP works the same way, it's still the body you want to suppress. You would use the PM_Aged_TB_Apply_TEMP.Voucher Number field in your calculated field. The AP one actually does have a section called 'double space', it provides space between vouchers. You could either move the report section to make the gap smaller, or create another calculated field. I'd create a calculated field 0_Suppress_Double_Space, and just put the integer 0 in the expression. Then, open up your report sections window, open the Double Space footer and check the box on the right hand side to suppress if your new calc field is zero (which it always is).
Kind regards,
Leslie