Manager - Finance & Accounts
58550 Points
Joined June 2010
Hey Nilesh!
Category A defect in GST returns usually means some data mismatch or missing information in the return, and the return can’t be processed until you fix it. The portal generally gives a specific reason or message about what’s wrong.
Steps to resolve Category A defect:
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Check the Defect Details:
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Log into the GST portal and go to your dashboard.
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Go to “Returns” > “View Filed Returns” > Click on the return with the defect.
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You should see a message or details explaining the nature of the defect.
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Fix the Defect:
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Based on the message, correct the mistake in your return.
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Common causes:
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Mismatch in invoice data (e.g., invoice missing from GSTR-2A/2B)
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Incorrect GSTIN or invoice number format
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Missing mandatory fields
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Incorrect or missing HSN/SAC codes
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ITC claims not matching purchase records
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You may need to amend or re-upload invoices or data as per the error.
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Re-file the Return:
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After correcting, submit the return again.
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The Category A defect should disappear if the issue is resolved.