If you have a Flash Import error that states Invalid Epos code Unable to locate flash for till (flash name) it may be because the Dish has been excluded from the Till Publish Profile, to check this follow the below steps:
Log into Procure Wizard.
Click into the Admin Cogs
icon along the top bar.
Click into Menus, Dishes & Recipes on the left.
Click into Manage Dishes.
Locate and Edit the dish.
On the Details tab check the Publish Settings to ensure its Included.