From Leslie Vail, When things go Wrong – I need to delete a printed SOP document. You can also turn on Delete Documents in Sales Document Setup and then turn it off when you are done.
Dynamics Confessor Blogspot: When things go Wrong – I need to delete a printed SOP document
Sales, Purchasing & InventoryMicrosoft & the GP Ecosystem
Archived post from 2012. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.