Understand policies and procedures for issuing credit memos.
Selected credit notes issued after reporting period until last field work date that amount over 25%TE.
a. Review the reason of credit note issuance and determine whether they are any impact to the current year's financial statements or not. If any determine whether adjustment to sales and A/R is required or not.
b. Review amount of totaled credit note issuance after year-end. If there is no item fall, select three small items to investigate.