A. If invoices are being rejected, review the common reasons for rejection such as incorrect billing information, missing purchase order numbers, or discrepancies in item descriptions. Ensure that all invoices are double-checked for accuracy before submission. Create a checklist for your team to follow when preparing invoices to minimize errors.

B. Implement an invoicing software that integrates with your existing systems. This can help automate the invoicing process, reducing the chances of human error and ensuring that all necessary information is included in each invoice.