Q: I am not able to create a new configuration in erwin Web Portal.
A: erwin Web Portal license does not allow to create any new configurations, only erwin Data Governance Edition of license has the feature of creating new configurations. This is due to License limitation.
Since erwin has divested from CA, erwin Inc no longer sell Enterprise edition or Data Governance Edition, If you looking for similar functionality as well as data mapping, data lineage, business glossary, data governance etc, Please check erwin Data Intelligence suite:
https://erwin.com/solutions/data-intelligence/
