STANAG 4855 reference for enumerations for simulation interoperability

What it is

STANAG 4855 is a NATO Standardization Agreement, currently Edition 1, dated 15 March 2023. It is not a technical specification. It is the agreement by which NATO nations commit to implement SISO-REF-010, Reference for Enumerations for Simulation Interoperability, the SISO reference document that defines the schema and repository this STANAG covers. The schema and repository content itself lives inside SISO-REF-010, not inside this four-page cover. Read on its own, STANAG 4855 requires almost nothing of a supplier directly. Its obligations run to nations, and it reaches a contractor only indirectly, once a nation has implemented it and a contract or task order names SISO-REF-010.

Who it binds, and how

STANAG 4855 is explicit that it binds nations rather than organisations. It "is effective upon receipt for use by the participating nations and NATO bodies." Its letter of promulgation describes the enclosed agreement as one "which has been ratified by member nations, as reflected in the NATO Standardization Document Database (NSDD), is promulgated herewith." Ratification and implementation are separate steps: nations that have not already done so are invited to "advise the NSO of their intention regarding its ratification and implementation." So "is STANAG 4855 mandatory" has no single answer. It depends on whether a given nation has ratified and implemented it, and, for a supplier, on whether a specific contract invokes SISO-REF-010 as a result.

What the agreement actually commits nations to

The stated aim "is to respond to the following interoperability requirements," and that requirement is a single sentence: "To define a consistent schema and repository for enumerations for distributed simulation." Under "Agreement," "Participating nations agree to implement the following standard" - SISO-REF-010, named in the text as "SISO-REF-010 - REFERENCE FOR ENUMERATIONS FOR SIMULATION INTEROPERABILITY." None of this is written as a duty on a supplier; it is a duty on the nation, and on the NATO bodies that implement it.

A cover agreement, not the schema itself

A reader who only has STANAG 4855 in hand does not yet have the enumeration schema or repository itself. SISO-REF-010 holds that content. This STANAG names no other related document - "OTHER RELATED DOCUMENTS" is answered "None" in the text - and it does not say where to obtain SISO-REF-010.

Implementation and review

STANAG 4855 "is implemented by a nation or by a NATO body when it has issued instructions that all relevant future systems, which interface to NATO and other national systems when engaged in NATO operations, will conform to the specifications detailed in SISO-REF-010 Reference for Enumerations for Simulation Interoperability (most recent edition)." Allies and NATO bodies "shall provide implementation details through the electronic reporting tool (e-Reporting)," and "Partner nations are invited to provide their implementation details through the electronic reporting tool (e-Reporting)." The NATO Effective Date is stated as "Not applicable," and the document states plainly that "This STANAG does not supersede any document." The STANAG "is to be reviewed in accordance with AAP-03. The result of the review is to be recorded within the NSDD," and the agreement is supervised under NATO's modelling and simulation standardization committee chain.

What it does not cover

STANAG 4855 names no supplier obligation directly: every duty in the text runs to "nations," "NATO bodies" or "Allies," never to a contractor or manufacturer. It also names no assessment or certification scheme of any kind. The only stated check is that the agreement itself is reviewed periodically against AAP-03, not that an organisation, a system or a piece of software is certified.