Unique PO Numbers in A/P Invoices

Accounts Payable

Enforces the use of a unique PO Number in the A/P Invoice entry screen.

How does it work?:

The customization monitors changes to the PO Number field on the A/P Invoice Entry screen, and:

  • If a value is set, it checks whether it has been used in any other A/P Invoice Entry
  • If so, the user is notified that the PO is a duplicate
  • If the duplicate PO Number is still in place when the entry is saved, the save will be stopped and a warning issued to the user
App Type



Provides useful functionality ‘out of the box’. (May require configuration, but not coding.)

Accounts Payable

Orchid Systems

Orchid Systems, a Sage Tech Partner, has been part of the Sage community for over 25 years. Extender is just one of our innovative add-on modules designed to enhance the functionality of Sage 300.

How to buy

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Your Sage Solution Provider can source these apps, determine their suitability for your requirements, and provide you with pricing. Do you have a requirement you think could be met with an Extender App, but you can't see it listed here? Your Sage Solution Provider can help you document the requirement, then either build the app for you or identify a suitable developer.


  • These apps were built by the developers named under the app descriptions, and the associated intellectual property vests with them.
  • Orchid Systems does not support or provide any warranty for the apps (unless the developer is listed as Orchid Systems).
  • Everyone’s requirements and environments differ, so be sure to thoroughly test any apps you acquire before loading them in your live environment.
  • These apps are designed to work in conjunction with Orchid Extender (Developer Edition), which in turn requires Sage 300 to be installed.
  • The app developer (via your Sage Solution Provider) can provide you with the full list of requirements for specific apps.