Glossary Updates12 new terms added to the glossaries · October 2, 2026, 22:44 CEST
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Glossary · Change, versions and configuration

Version compatibility

In systems engineering, version compatibility is the defined ability of system or interface versions to work together without unacceptable behavior. It is stated as a matrix of versions that have been specified and verified to work together.

  • Data and interfaces
  • Systems engineering
  • Verification

In one sentence

Version compatibility defines which system and interface versions may work together, backed by tests rather than assumptions.

Example

An integrator keeps a compatibility matrix for a production line listing which robot controller, safety PLC and MES interface versions have been tested together.

How it applies

  • Integrated systems: Maintain a compatibility matrix covering protocol, data model and behavior versions. “Compatible” should always mean “verified together”.
  • Machine safety: Unacceptable behavior includes silent misinterpretation, not only communication failure. Include safety-relevant reactions in compatibility tests.
  • Evidence: Link the matrix to the configuration baseline and to the test results. An untested combination is not compatible by default.
  • Technical documentation: Operating and service documents should state which versions a spare part or update is compatible with, so that field replacements do not create an unverified integrated system.

Subtypes

Backward compatibility covers new versions working with old peers and data; forward compatibility covers current versions handling future extensions.

By knowledge.aitechdoc.world · Published September 25, 2026 · Last reviewed

Source: AI TechDoc Knowledge editorial definition, based on systems engineering practice

Definitions follow the cited standards and specifications. Where a source is a copyrighted publication, such as an ISO, IEC or EN standard, the definition is a close paraphrase, not a verbatim quotation, so as not to infringe copyright. We recommend reading the original publication. The sections “How it applies” are editorial commentary by AI TechDoc Knowledge and are not part of any standard.

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