Which of the following is NOT a reason for payment adjustment?

Payment adjustments can occur for various reasons that affect the final amount a customer owes or the amount a company receives. In this context, receiving a credit note, discount computations, and authorization for payment are all valid reasons for adjusting payments.

Receiving a credit note typically indicates that a company is acknowledging a return or correction in a previous invoice, leading to a decrease in the total amount owed. Discount computations involve calculating reductions in the original price, which also necessitates an adjustment to the payment due. Authorization for payment relates to ensuring that a payment is approved before it is processed, which can also result in adjustments based on corporate policies or funding availability.

Adjustments for service fees, however, refer specifically to fees that might not justify a reduction in what is owed but rather an added cost associated with the services rendered. While these fees are a part of the overall payment picture, they do not represent a traditional adjustment to the payment amount that would warrant a decrease or a modification of the owed amount in response to an actionable reason, making it distinct from the other options listed. Thus, this makes it the right choice as an option that does not align with typical reasons for payment adjustments.