ISO 19135-1:2015ISO 19135:2026
Upgrade Guide
A comprehensive guide for migrating registers from ISO 19135-1:2015 (and its Amendment 1:2021) to the FERIN framework in ISO 19135:2026.
Quick Assessment
Before diving into the guide, assess your current situation:
Your 2015 Conformance Class
Migration Complexity
Select your conformance class to see complexity assessment
What's New at a Glance
New Concepts
- Two-plane architecture (concept + content)
- Functional identifiers
- Commitments framework
- Concept relations (inheritance, partitive)
- Normalized status dimensions
Changed Concepts
- Conformance: hierarchy-based → capability-based
- Status: single value → multiple dimensions
- Versioning: simple → multi-layer
- Relations: predecessor/successor → rich model
Removed Concepts
- XML schema (technology-neutral now)
- "submitted" status (proposals are separate)
- "deprecated" terminology (use "invalid")
- Item removal (persistence required)
Migration Timeline Expectations
Phase 1
Understanding
Read paradigm shifts, terminology, conformance migration
1-2 daysPhase 2
Planning
Select migration path, plan data transformation
2-5 daysPhase 3
Implementation
Update schemas, migrate data, update processes
1-4 weeksPhase 4
Validation
Test against conformance requirements, validate migration
1-2 weeksNote: Timeline varies significantly based on register complexity, existing implementation quality, and chosen migration path.