(Maitre'D 8.00.000.057 and later versions of Maitre'D)
You can forbid users to change the price of inventory items when creating
a purchase order or receiving merchandise.
In the Back-Office, the price field is grayed out for users other then
the system owner and distributor.
On the workstation, the price field is grayed out.
Inventory Management / View / Options / Purchase Order
Disable Item Price Modification:
Activate this option to forbid users other then the system owner and distributor
to change the price of inventory items when creating a purchase order
or receiving merchandise in the Back-Office, or on the workstation.