# Turn GST error-report JSON into a readable review

Review the error codes and messages already present in a GST portal error file. Bring the reported issues into a spreadsheet so you can compare them with your source records.

Free after sign-in. No paid subscription is required.

## GST error report reader: quick answers

- **Is it free or paid?**: Free after sign-in; no paid subscription is required.

- **What can I use as input?**: A GST portal error-report JSON or one-JSON ZIP. Ordinary return JSON is not evidence that validation passed.

- **What will I get?**: A readable Excel report of error codes, messages and available document references present in the input.

## How it works

1. Sign in and upload a portal error-report JSON or a ZIP with one JSON file, within the 5 MB input limit.

2. Read the extracted error codes, messages and available document references.

3. Download the Excel error report and review the affected records in your original data.

## Know what the tool supports

Only errors present in the uploaded error report are displayed. An ordinary return file or an empty extracted report is not evidence that a return has passed validation. The reader does not fix or resubmit a return.

[Read the supported inputs and outputs](https://gstnook.in/help)

## Common questions

### Why does the tool show no error rows?

The file may not contain supported error-report entries. Check that it is the error file supplied by the portal. No extracted errors does not establish that a filing is valid.

### Does the reader change my GST return?

No. It creates a readable review report. Make and verify any corrections in your source records and filing workflow.

Need help with a file? [Check supported formats](https://gstnook.in/help#file-formats) or [contact GSTNook support](https://gstnook.in/contact).

Product information by GSTNook · Updated 17 October 2026. [Read the supported-work terms](https://gstnook.in/terms#supported-work).

---
Canonical page: https://gstnook.in/tools/gst-error-report
Content updated: 2026-10-17
Publisher: GSTNook · India
Use the HTML page for interactive tools and support forms.