When ordering from a supplier they will often require your customer number (also referred to as header code for online orders). This field can be found in the Supplier details. 

From the main menu:

  • 2 Stock control, 7 Maintain suppliers
  • Type in the first few letters of the supplier you are going to edit and press the Enter key
  • Select the required supplier from the drop down list by using the arrow key and then press enter
  • Look for the field called Customer no.
  • In this field either add or edit your unique customer number for that supplier.