According to the IIA guidance, the most appropriate next step when discovering a sales manager approving contracts beyond their authorization limit is to communicate the finding to the supervisor of the sales manager through an interim report. This approach ensures that the issue is addressed promptly and management can take immediate corrective actions to prevent further unauthorized activities. Including new contracts under negotiation in the final report would delay action, while reminding the sales manager of their authority limits does not escalate the issue appropriately.
Reference:
IIA Standards: 2440 - Disseminating Results
IIA Practice Guide: Communicating Audit Results