Agreed upon procedure is an engagement in which an auditor is engaged to carry out those procedures of an audit nature to which the auditor and the entity and any appropriate third parties have agreed and to report on factual findings. The recipient of the report form their own conclusions from the report by the auditor. The report is restricted to those parties that have agreed to the procedures to be performed. As the auditor simply provides a report of the factual findings of agreed upon procedures, no assurance is expressed.