I need some clarification on this, before in AP on the System Option tab there was an option that if it was enabled would allow or disallow duplicate check posting. I am no longer seeing that option.

A client upgraded and has posted a batch of checks but only realised that the check numbers were duplicated due to Bank Rec where it checks for duplicate bank reference.

Can someone tell me if checking for duplicated check numbers is no longer being done in AP, and if it is where I need to go to activate it.

Thanks
Ishana