Unable to Sort one or more attributes in a CA Project & Portfolio Management (PPM) List View. When clicking on the header names in the portlet or object list, the columns are not sortable.
If it is an attribute type that includes the below types, this is by design as these attributes aren't sortable.
For Virtual Attributes (created on sub-objects), the same rules apply for data types on the master object.
See CA PPM Tech Tip: Attributes Available for Filtering and Sorting for more details on what is and is not available for sorting and filtering