Records needed for this question
Source invoice, expected basis, calculation and proposed adjustment.
How to investigate
Have a reviewer reproduce the variance independently before authorizing supplier contact.
An illustrative review decision
Ask a second reviewer to recreate the requested adjustment using the attached records. If that reviewer needs an undocumented assumption, list the gap before the case moves toward supplier communication.
What can lead to the wrong conclusion?
A suspected mismatch without a supported expected amount is still an investigation.
The result to retain
A review-ready evidence pack with outstanding gaps listed.
Apply the review in context
Explore procurement document reconciliation, exceptions, findings and recovery workflows. Check the current plans and confirm data availability for your intended workflow.
This guide describes a human review method, not a claim that every scenario is automatically detected or executed. Explore AuditRes Procurement.