Which of the following is a notification to supply that MOV documents were not completely received?

The correct response is APX because it refers specifically to the notification used when Movement Order Validation (MOV) documents are not fully received. This form serves as a critical communication tool within the MILSTRIP process, indicating to the appropriate personnel that there are outstanding documents required to complete the supply action. It helps ensure that the supply chain maintains accuracy and that all necessary paperwork is accounted for, facilitating efficient inventory and resource management.

In contrast, other options do not pertain specifically to the notification of incomplete MOV documents and thus do not fulfill this particular purpose within the MILSTRIP framework. Each alternative serves a different function or context within logistics documentation. Understanding the specific role of APX is essential for effective operations in military supply chain management.