Why an e invoice or e way bill gets rejected and how to fix the data

The portal returns an error code and a short message with each rejection, yet billing staff often skip both and simply key the invoice in again. Skipping them is the habit to break. The same rejection follows.

Log every code for a week. Three or four errors dominate. Group them as party, item, document and transport faults, and give each group to the person who owns that master. That tells you which master to clean first.

Rules change, so confirm filing details with your tax professional. What follows covers how billing software prevents common data faults.

A GSTIN with one wrong character fails at once. So does a valid number that has been cancelled, or one from a different state than the place of supply you entered.

Look at the customer master. Is the GSTIN stored once, validated on entry and tied to the legal name and registered address, so every invoice for that customer reads from the same record? Or is it typed fresh each time?

Fix it at the master. Validate the format and the two digit state code when the customer is created, and refresh the status of regular buyers before each billing run. A buyer who surrendered the registration last month still looks fine inside your own system.

An HSN code of the wrong length, a unit the portal does not accept, or a tax rate that does not belong to the code draws a rejection. Hurried items carry placeholder codes.

Export the item master and sort it by HSN. Look for blanks, one product listed under two codes, unrelated items sharing a single code, and units such as NOS or PCS that the portal list spells differently. Fix the spelling at the master.

Treat the item master as a controlled list. One person edits tax fields. No HSN code, no sale.

The portal refuses an invoice number it has already registered for your GSTIN in the same financial year, even when the earlier attempt was cancelled. This happens when a bill is cancelled and regenerated under the old number, or when two billing counters number invoices by hand.

Dates fail too. Stale or future dates bounce.

Use one numbering series inside the software, locked against edits. Cancel, then issue a fresh number. Retire the old one. Keep a register of cancelled numbers with the date, the reason and the name of whoever cancelled, so the next audit finds an answer.

E way bill rejections cluster in the transport block. A vehicle number in the wrong format, a pincode that does not exist or a distance beyond the allowed range stops generation at the dispatch gate.

Keep a transporter master holding the transporter ID, the usual vehicle numbers and the pincodes of the depots they serve most often, so dispatch selects rather than types. Store pincodes against each party and let the software compute the distance, instead of asking the dispatch clerk to guess.

Test these fields at the dispatch screen, before loading. A rejection at the gate costs a waiting truck. A rejection at the desk costs a minute. When a load changes truck mid journey, update Part B of the e way bill with the new vehicle number instead of leaving the old one on record.