Records needed for this question
The original PDF, carrier CSV and extraction error log.
How to distinguish the two approaches
Compare the same invoice across formats and reconcile omitted taxes, credits and continuation pages.
An illustrative review decision
If an OCR extraction drops a negative sign, the PDF image and carrier data export may disagree. Retain the discrepancy for review instead of overwriting the original document with normalized values.
What can lead to the wrong conclusion?
A readable document image can still produce a misplaced decimal during extraction.
The result to retain
A preferred-source policy with manual-review triggers.
Apply the review in context
Review carrier invoice evidence, inventory, findings and recovery cases in AuditRes Telecom.
This guide describes a human review method, not a claim that every scenario is automatically detected or executed. Explore AuditRes Telecom.