The is the definitive, mandatory standard for formatting, structuring, and exchanging military character-oriented messages across Allied joint, land, maritime, and air operations. Governed by the STANAG 7149 standardization agreement, APP-11 translates multi-national data needs into standardized Message Text Formats (MTFs) and XML representations to ensure flawless digital communication between disparate Command and Control (C2) systems.

The document is used to ensure that military supplies, spare parts, and equipment are identified, cataloged, and exchanged using a – the NATO Stock Number.

If you are looking for a , researching military interoperability, or working on defense communication software, this comprehensive guide covers everything you need to know about this critical standard. What is NATO APP-11?