Upon noticing an error on a posted invoice, the recommended corrective action is to use the 'Cancel and Rebill' feature. This process allows an admin to roll back the invoice to its state before the most recent billing cycle, enabling the correction of errors on the invoice record. This functionality is applicable to both draft and posted invoices, providing a way to address issues such as missing invoice lines or incorrect billing details. After canceling and rebilling, the admin can correct the order as needed and proceed to create and post a new invoice, ensuring the accuracy of billing records.