Invoice Rejected Due to Price Mismatch
A price mismatch rejection occurs when the unit price, line total, or gross invoice amount exceeds the agreed figure on the customer's purchase order.
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What this rejection means
Enterprise accounting systems apply strict tolerance checks (typically 0% to 5%). If the line item price on your bill is even pennies above the authorized unit cost, or includes unapproved freight, overtime, or surcharges, the invoice is halted for price variance.
Common reasons it occurs
- Supplier instituted a price increase that was not updated in the buyer's procurement catalog or PO.
- Unapproved freight, shipping, fuel surcharges, or packaging fees added to the invoice.
- Billing calculated in a different currency than the PO (e.g. CAD vs USD).
- Unit of measure pricing confusion (e.g., price per case billed against price per single unit).
- Overtime or rush delivery charges added without an approved change order.
What the buyer's system is checking
The ERP checks line math: (Invoice Unit Price - PO Unit Price) * Quantity. If the variance is positive and exceeds the buyer's allowed tolerance, the payment pipeline halts automatically.
What your billing desk should verify
- ✕Do not silently credit or absorb valid contractual charges without discussing them with the customer.
- ✕Do not submit invoices with estimated or variable shipping fees unless authorized as 'T&M / Pass-Through'.
Step-by-step resolution process
1. Identify the exact line item variance
Calculate line-by-line differences between your invoice and the PO to pinpoint the specific dollars in dispute.
2. Determine if the variance is justified
If the price was agreed, gather the quote or email approval and request a PO amendment. If it was an internal billing error, issue a credit memo and revised invoice.
3. Align with purchasing and AP
Send the revised invoice and credit note or confirmation of the PO amendment to the AP specialist handling your file.
What to say to the buyer
Subject: Price Variance Resolution: Invoice [Invoice#] and PO [PO#]
Hi [Buyer Name], Invoice [Invoice#] for [Amount] was flagged by AP due to a price variance of [Variance Amount] against PO [PO#]. The difference reflects: [Explain reason, e.g. updated freight rates / agreed material cost adjustment approved on Date]. Attached is the written agreement from [Date]. Could you please submit a PO amendment for the difference so AP can release the invoice? Thank you, [Your Name] [Your Company]
Evidence to gather before submitting
How to prevent recurrence
- →Require sales and customer success teams to confirm PO match before customer invoicing runs.
- →Lock billing system unit prices to the exact numbers agreed on the customer contract.
Frequently Asked Questions
What is price tolerance in accounts payable?
A price tolerance is a small threshold (e.g. 1% or $10) programmed into AP software allowing minor rounding differences to pass without human intervention.
Can we issue a partial invoice to get paid for the agreed amount?
Some buyers allow short-paying the disputed amount while paying the undisputed balance. Inquire whether their AP policy permits partial settlement.
Stop chasing invoice exceptions manually.
When invoice rejections cause payment delays, your team spends days chasing PO reopenings, warehouse receipts, and AP clerks.
Recify operates the entire invoice-to-cash workflow for B2B companies—resolving exceptions, managing customer portals, and ensuring undisputed payments arrive on time.