Document Forms known issue for 2.6.0 release notes

Known Issue: Form Schema Validation Can Cause Errors

Description: Sakai 2.5 allowed Forms to be defined with schemas with invalid element names. These Forms could not be used for artifacts, but could be referenced by Portfolio Templates without errors. As of Sakai 2.6, the schemas are validated more consistently. If there is a Form defined in a system that is upgraded to 2.6, this new validation will cause errors when attempting to use a Portfolio Template referencing one of these invalid Forms. An error can also occur if user attempts to complete one of these Forms.

Resolution Plan: Most installations will not be affected by this problem. However, there is work underway to provide a utility to identify any invalid Forms so they may be repaired. This utility is planned to be available for the 2.6.1 release or before.