Which of the following is a common reason for an invoice discrepancy?

Incorrect quantities are a common reason for invoice discrepancies because they directly impact the accuracy of the billing process. When the quantities of goods or services being invoiced do not match the quantities received or agreed upon in a purchase order, this can lead to disputes and necessitate adjustments. For example, if a company orders 100 units of a product and the invoice reflects 120 units, this inconsistency will trigger a review process to resolve the discrepancy. Accurate quantities help ensure that companies only pay for what they have received, which is essential for financial integrity and budgeting.

While company mergers, seasonal fluctuations, and employee turnover can influence operations and potentially lead to discrepancies, they do not directly affect the figures on an individual invoice as much as incorrect quantities do. A merger might lead to a re-evaluation of suppliers or changes in invoicing practices, seasonal fluctuations may change purchasing patterns, and employee turnover can disrupt workflow, yet none of these factors are as directly linked to invoice accuracy as incorrect quantities are.