Review duplicate receipt files without double-counting purchases

Duplicate documents are not always duplicate transactions. The same purchase can produce a supplier invoice, a payment receipt, an email confirmation, and a replacement PDF. An accountant needs to understand their relationship before treating file counts as evidence of separate expenses.

Just Invoice protects interrupted upload retries from creating repeated records when the same upload request is retried. That is different from recognizing every duplicate a customer manually submits later. Do not assume the library performs automatic OCR matching, supplier-reference analysis, or accounting duplicate detection across all files.

Compare document identity first

Look at supplier, reference number, purchase date, items, amount, and currency. Two filenames can differ while the source is identical. Two receipts from the same store on the same day can also represent genuinely separate purchases. The filename alone cannot decide which case applies.

A typical example is a supplier PDF downloaded from the billing portal and the same PDF attached to an email. Another is a till receipt photographed twice after the first image looked blurry. Those copies may be alternatives for one transaction rather than new purchases.

Identify different document roles

Do not delete every related document merely because amounts match. An invoice and a payment receipt may support different facts. A credit is not automatically another copy of the original purchase. Explain the relationship to the accountant and use the firm's evidence process.

Keep the review reference clear

Use the customer's description to identify a replacement or related source: “Readable PDF replacing the earlier photo of this supplier invoice.” The accountant can record a private note indicating which document was examined and what question remains.

If a customer document should be removed or corrected, the customer performs that action. Accountant access is for scoped reading and review, not deletion. Discuss required evidence before cleaning up files, particularly if one copy contains details absent from the other.

Check duplicates before annual handoff

Review recurring vendors, repeated filenames, and receipts captured during a backlog cleanup. Compare known purchases with the annual index, then open suspected duplicates. A library with 120 files does not necessarily contain 120 distinct expenses.

Keep any accounting treatment outside the document count. The annual ZIP packages sources and an index; it does not calculate purchase totals or decide whether two files should generate one entry. Use the bank cross-check guide for transaction matching and the PDF guide for source capture.