All Purchase Orders are identified by a unique Purchase Order Number which has the following format:

BBB/TXXX

BBB is the Branch Code, T is the Type and XXX is a sequential number.

The Types are as follows:

• S - Spectacle, i.e. glazing orders.
• L - Lenses ordered separately from the glazing order, e.g. Uncuts or Remote Edged.
• F - Frame ordered for a glazing order but from a separate supplier to the workshop.
• ST - Stock, i.e. products NOT ordered for a specific patient.
• C - Contact Lenses.

So a typical Purchase Order Reference might look like these -