Challan vs invoice
A delivery challan accompanies the goods and records what physically arrived; the tax invoice is the billing document with GST details (see our GST guide). They should agree with each other and with your original quotation.
What to verify against the challan
- Grade — does it state 304/316 as ordered, not just "SS"?
- Quantity and dimensions — count and spot-measure rather than assuming
- Finish — mirror, hairline or PVD as specified
- Weight — for per-kg priced material (see our pricing units guide)
Sign with a note if something's off
If quantity or condition doesn't match, note it on the challan before signing rather than signing clean and raising it later — a signed clean challan makes a later dispute much harder to resolve fairly for either side.
Keep the paperwork
Challan, invoice and the mill test certificate together form your record of what was actually supplied — worth filing properly, especially for larger project orders.