In Attache Desktop release 24.1, an option now exists to enable or disable duplicate supplier references in purchase order entry. See: Access Attaché version 24.1 desktop release (May 2024).
To disable the option and allow duplicate supplier references:
Go to Setups, Suppliers, Options, Purchasing Options.
Go to the Options tab, under the Options task area and tick Allow Duplicate Reference Details.
Click Accept F9 to save the change.
Re-create your purchase order and the supplier reference will now be accepted.
