Two transactions with the same value and a similar description can look like an obvious duplicate. In practice, they may represent two genuine purchases, a repeated bank feed entry, a manually entered item that also arrived through an import, or records that only appear identical at first glance. Removing one without checking the evidence can turn a visible discrepancy into a hidden bookkeeping error.
A duplicate-transaction review creates a disciplined route from suspicion to resolution. It compares the entries with source evidence, identifies how each reached the records and preserves a clear explanation for any correction.
Define the pair or group being investigated
Record the transactions that appear to overlap and the features that triggered the review, such as matching values, dates or references. Keep the initial description neutral rather than declaring one entry wrong before the evidence has been checked.
This creates a clear scope for the investigation and reduces the chance of changing an unrelated transaction.
Compare the underlying source evidence
Locate the relevant invoice, receipt, bank information or other approved source record available to the bookkeeping team. Check whether the evidence supports one transaction, several genuine transactions or an unresolved position.
Similar descriptions alone are weak evidence. The review should be anchored to the records that substantiate the business event.
Trace how each entry entered the books
Where the accounting workflow makes this visible, identify whether an entry came from a bank feed, import, manual posting or another route. Two entries representing the same source event may have arrived through different mechanisms.
Understanding the route helps address the immediate discrepancy without assuming a particular software feature caused it.
Check whether the entries differ in accounting context
Look beyond the amount. The entries may relate to different dates, suppliers, documents, accounts or other working classifications. A genuine repeated payment can resemble a duplicate posting while requiring a very different follow-up.
Do not collapse meaningful differences merely to make the ledger appear tidy.
Record the resolution before making a correction
Once the evidence supports a conclusion, document which entry is valid, which entry requires correction and why. Use the firm's established correction and review process rather than silently deleting history.
If the position remains uncertain, leave it as an open discrepancy with a defined next step instead of forcing a premature answer.
Check connected records after the correction
A duplicate-looking transaction may be linked to a reconciliation, document, supplier record or other bookkeeping work. After an authorised correction, check that connected records still present a coherent position.
This helps prevent a local fix from leaving a second inconsistency elsewhere in the workflow.
Use repeated cases to improve the process
If the same duplicate pattern recurs, review the workflow that creates it. The cause may be a repeated import, unclear responsibility for manual entry or another process issue that can be addressed upstream.
A careful duplicate-transaction review protects the integrity of bookkeeping records by requiring evidence before removal. It helps teams distinguish genuine repeated business activity from duplicate posting and leaves a traceable explanation when a correction is needed.