Failure to assure that when computers or automated data processing systems are used as part of the production or quality system the manufacturer shall validate computer software for its intended use according to an established protocol, as required by 21 CFR 820.70(i). For example, electronic records are used, but there was no software validation. No procedures are established to validate for its intended purpose the Microsoft Word or Microsoft Excel software used in creating and maintaining nonconformance records, product return records, internal audit corrective action records, or preventive action records. View the original warning letter.