Create Bill: Warning Duplicate bill, number already entered.

I use another accounting program which also has a bill "Tray" for bills to be emailed directly. This program gives you a notification if you enter a bill that has the same bill number. You can click on a link to this other bill (already entered) to review the details & see if this is the exact same bill. This prevents accidently entering a bill multiple times by mistake. Would love to see this on Myob as well.