Why is my invoice missing from GSTR-1, or why don't the totals match?

You run GSTR-1 for a month and an invoice is not listed, sits in a section you did not expect, or the
totals differ from your sales register or the e-invoice portal. Most of the time GSTR-1 is right: it groups
invoices the way the GST Portal does. This page explains where each kind of invoice goes, and what to fix
when the data is wrong.

Where to see GSTR-1

India Compliance has two places:

• GSTR-1 (search "GSTR-1" in the awesome bar): generates the return for a company, GSTIN and period,
  compares it with the GST Portal, and uploads or files it. Use this to file.
• GST Sales Register: one line per invoice, with its GSTR-1 section. Use this to find a single invoice.

See GSTR-1 in India Compliance.

An invoice is not listed under its own number

To find one invoice, open GST Sales Register for the period and filter by the invoice number.

An invoice is missing completely

1. No GST on the invoice. An invoice without GST rows in its taxes table has no GST details, so
   GSTR-1 cannot classify it. Add the right tax template, amend the invoice, then generate GSTR-1 again.
2. Wrong GSTIN or period. GSTR-1 is per GSTIN. If the company has more than one GSTIN, check the
   invoice's Company GSTIN and select that GSTIN. Check the invoice's posting date is in the period.
3. Draft or cancelled. Only submitted invoices are included.
4. Data changed after generating. GSTR-1 keeps the data from when it was generated. After you change
   invoices, generate it again (or use Reset on the GSTR-1 page) so it recomputes.

Totals do not match

• Two GSTINs combined. Reports run without a GSTIN filter add up all GSTINs of the company. Filter
  every report by the same GSTIN.
• Returns. The HSN summary includes invoices and credit notes together. The B2B section does not
  include credit notes (they are in 9B). So the two totals differ by the credit notes.
• Zero-value invoices with a tax rate add rows with zero amounts to the HSN summary.
• GST applied twice. If an invoice has the same GST account in two tax rows, the GST is counted twice.
  Fix the tax template, then amend the invoice.

Generating or uploading GSTR-1 fails

• Credentials error: uploading uses the Returns API. See GST API errors.
• HSN code errors: an HSN code with a space or the wrong length fails the GST Portal's checks. Fix the
  HSN code on the item and on the affected invoices, then generate again.
• After restoring or moving a site: the stored GST Portal session and passwords cannot be read with
  the new encryption key. Enter the credentials again.
• Old app version: several GSTR-1 generation errors were fixed in India Compliance releases during
  2025 and 2026. Update the app, and make sure the site uses a stable branch (for example version-16), not
  a beta branch.

Related

• India GST, e-invoice and e-way bill: find your answer
• GSTR-1 in India Compliance
• GST reports: Sales Register, Purchase Register, GST Balance