The Credential Transparency Description Language (CTDL) enables the linking of education and career pathways components to depict routes to a destination.  The CTDL Pathway terms were initially developed to support use cases where there are fairly simple conditions for progressing through routes in a pathway.   Over the last two years, the Credential Engine team has analyzed numerous education and career pathways with our partners and published some pathways to the Credential Registry.  

The analysis of pathways has verified the need for CTDL to support use cases with more complex conditions and constraints. As a result, a draft proposal has been created to seed discussion and development of a robust constraint expression capability  for CTDL.  The Pathways Constraints Task Group will refine the draft proposal including validating complex use cases for pathway conditions and constraints and extending the domain model and terms.

See details in the Pathways Constraints Task Group Announcement