The Include in the Data Warehouse is greyed out, hence,unable to reconfigure the option.
Environment
Release: All Supported Releases Component: Clarity PPM Data Warehouse
Cause
You are on the sub object for the attribute instead of the master object.
For instance, you are on the project object trying to include the attribute in the data warehouse, but the attribute was actually created on the investment object.
Resolution
For your attribute, check the Database Table column. It will show which object the attribute was created on. if it shows INV_INVESTMENTS that means it is on the investment object.
Note: Not all attributes will have a database table name.
Go to the Master Object properties page and Include in Data Warehouse there