Format compatibility: define where STEP assembly will be used and what unit axis normalization must prove there.
Preserve the untouched STEP assembly asset and record authoritative units before changing geometry, materials, textures, hierarchy, or metadata for unit axis normalization.
For STEP assembly unit axis normalization, Keep the sample file, application versions, import and export settings, screenshots, logs, and fallback format. Product, marketplace, regional, and compliance decisions still require the responsible specialist.