Serial Numbering and Variable Data Printing: Invoice Books, Tickets and Coupons

By Rajesh Company · November 2026 · 6 min read

Some printed pieces are not identical. Invoice books need running numbers. Event passes need unique codes. Mailers carry the recipient's name. This is variable data printing, and getting it right depends on planning the data as carefully as the design.

Illustration of three tickets with running numbers 0001 to 0003, a perforated stub and a QR code

What counts as variable data

Sequential numbering: a running number on every piece, such as 0001, 0002, 0003.
Names and personal details: certificates, ID cards, invitations and letters.
Barcodes and QR codes: unique codes for tracking, entry or product information.
Mixed content: different addresses, offers or text blocks on each piece.

Invoice books and bill books

Bill books and invoice books are usually made as sets of carbonless copies, with the top sheet white and the copies in other colours. Each set carries a serial number, and pages can be perforated for tear off. See bill books.

Decide the number of copies per set and who receives each colour.
Give the starting number and the number of books. If you are continuing an earlier series, state where it ended.
Tax invoices are expected to carry a unique serial number. Check the exact format with your accountant before you finalise.

Tickets, coupons and passes

For entry passes and coupons, numbering is part of how the piece is controlled. Perforated stubs let one half be kept by the organiser. Barcodes or QR codes allow scanning at the gate. See event passes.

Printing a number does not make a ticket impossible to copy. If forgery is a real concern, discuss it with us at the briefing stage so you can choose suitable options.

Preparing the data file

Variable jobs usually need a spreadsheet alongside the artwork. Most problems come from the data, not the print.

One row per piece, one column per field.
Check spelling, names and numbers. Whatever is in the file is what gets printed.
Note long names and special characters so the layout leaves enough room.
Keep the final approved version only. Send a sample row for approval before the full run.

Personal data in these files, such as names and phone numbers, should be shared only as needed and deleted from shared folders afterwards.

Proofing

Ask for a proof that shows the first, a middle and the last piece, and check the numbering sequence has no gaps or repeats. For high volume jobs, a sample from the finished run is worth keeping on file in case of a later query.

Talk to Us

We handle numbering, perforation and data merges as part of production. Have a look at our variable data and numbering page. For ID cards with photos and barcodes, read our PVC ID card guide.

Send details to +91 99101 48075 on WhatsApp or use the quote form on our homepage. Timelines depend on the product, quantity and finishing, and are confirmed when we quote.

Related products: Bill books · Event passes · Certificates