This guide is in English for now. The tool itself works in your language.
Challan › Help › Numbering, printing and saved copies
How delivery challan numbers work
Every delivery challan gets the next number of its own series, for example DC/26-27/001. Each business has its own series, and it starts again at 1 on 1 April of every financial year.
Step by step
- Let the number fill in. When you start a new delivery challan, Delivery challan number already shows the next number. Keep it unless you have a reason.
- Change the series if needed. Press Change number series under the number box (or My data › Settings › Number series of each document). Set the prefix; the next number is shown at once.
- Type your own number (optional). You may type a different number, up to 16 letters, numbers, / or -. The maker warns when the same number is already saved for this business and year.
- Save. The series moves on only for numbers you saved.
Worked example
Your first delivery challan of 2026-27 is DC/26-27/001, the next DC/26-27/002. On 1 April 2027 the series becomes DC/27-28/001 again with the new year, DC/27-28/001.
Rules and dates
Rule 55 of the CGST Rules: a delivery challan has a consecutive serial number of up to 16 characters, unique for the financial year.
Common mistakes and how to fix them
- Starting each month from 1. Keep one running series for the year; start a new one only on 1 April.
- Two documents with the same number after making them on two computers. Work on one device at a time and move data with a backup file.
- A deleted number leaves a gap. Write the reason in your records (cancelled), or reuse it before the next one is issued.
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