Upload invoice data
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How this checker saves manual review time
- Exact duplicate: same supplier GSTIN + normalized invoice number + invoice date + taxable value.
- Invoice-number duplicate: same supplier and normalized invoice number even where dates/values differ.
- Near duplicate: minor invoice-number variations such as spaces, hyphens, slashes or one-character changes can be surfaced for review.
- Cross-file duplicate: the same invoice can be identified even when the register is split across several Excel/CSV files.
- Suspicious pattern: same supplier + same invoice date + same taxable value/tax combination across different invoice numbers is flagged for human review.
Important: A duplicate flag is an exception, not a legal conclusion. Legitimate amended invoices, debit/credit notes, recurring billing, different branches, purchase orders and invoice series can create similar patterns. Always review the source document before deleting or reversing an entry.