CDFAE1028E A function call to delete a project was rejected because one or more UDXs belong to that project. Project name: `project-name`.

Explanation
This message is returned when a function is called to delete a user-defined extension (UDX) project but that project contains one or more active UDXs.

User response
Either drop all UDXs from the project before calling the function to delete the project, or call the function to delete the project with the function's DROPUDXS parameter  set to YES.