What should a cardholder do if they notice an error on their GPC statement?

When a cardholder notices an error on their GPC statement, the appropriate action is to report it immediately to the Activity/Organization Program Coordinator (A/OPC) or the relevant authority. This is crucial because timely reporting ensures that the discrepancy can be addressed promptly and prevents any potential financial discrepancies from escalating.

Failing to report the error could lead to complications such as unaddressed billing issues, incorrect transaction records, or administrative challenges down the line. It's also important for maintaining proper oversight and accountability in the use of government funds, as the GPC system relies on accurate reporting of transactions.

Addressing the other options, ignoring an error does not resolve the issue and may lead to further complications. Adjusting future purchases to compensate for an error is not a proper practice, as it could lead to inaccurate record-keeping and financial mismanagement. Contacting the vendor for clarification is often a step that could be taken after reporting the issue, but it does not replace the necessity of notifying the A/OPC or relevant authority, who are trained to handle such errors appropriately within the GPC framework.