In which case should a supply discrepancy report (SDR) be submitted?

A supply discrepancy report (SDR) should be submitted in cases involving shipments containing controlled items. This is important because controlled items often have strict regulations and policies governing their transportation, storage, and handling. Any discrepancies in these shipments can have significant implications for security, compliance, and accountability. When a controlled item shipment has a discrepancy—such as missing items, damage, or receipt of incorrect items—it is critical to report it immediately to ensure that proper procedures are followed, and any potential issues are addressed promptly.

The other scenarios do not necessitate an SDR in the same way. Valid deliveries typically indicate that the items received match what was documented, thereby not warranting a report. Shipments not received could be addressed through other channels or processes, as they may fall under different reporting mechanisms or logistics issues. Changes in delivery schedules may involve internal adjustments but do not directly relate to discrepancies in the actual items being delivered. Hence, the focus on controlled items highlights the heightened level of scrutiny required for these types of shipments and the importance of documenting any issues correctly.