To prevent Purchase Orders for being raised for a specific supplier:
Click Purchase, Supplier Maintenance
Search for the required supplier
Click Rating
Press <Ctrl> + M keys to enter modify mode
Press F5 key in the Supplier Rating field
Enter in the code and description you wish to be displayed when a user tries to raise a Purchase Order for this supplier
Clear the Allow P/O's check box to prevent orders being raised for this supplier.
Click Select. When raising a Purchase Order for this supplier you will now receive the following error message - 'This supplier's rating forbids the raising of purchase orders'.
