Which document defines the Standard Message Format?

Which document defines the Standard Message Format?

• A. JANAP 128
• B. ACP 123
• C. NWP 1-03
• D. ACP 131

Answer: (A)

The Standard Message Format is defined by a joint publication that codifies how messages should be structured so all services read and process them the same way. JANAP 128 provides the required template for joint messages, outlining the header elements (such as originator, addressee, precedence, and date-time group), the message text, and any security or transmission handling notes. This uniform format ensures messages can be understood and routed correctly across services and allied partners, reducing misinterpretation and delays. The other publications cover different aspects of communications or operations, not the standardized message text format, so they don’t define how a standard message should be written.

The Standard Message Format is defined by a joint publication that codifies how messages should be structured so all services read and process them the same way. JANAP 128 provides the required template for joint messages, outlining the header elements (such as originator, addressee, precedence, and date-time group), the message text, and any security or transmission handling notes. This uniform format ensures messages can be understood and routed correctly across services and allied partners, reducing misinterpretation and delays. The other publications cover different aspects of communications or operations, not the standardized message text format, so they don’t define how a standard message should be written.