I am organizing my schedule (group & sort) by activity codes. For some reason, the activity "code value" and description is being displayed. I don't want the code value to be visible. Can someone help?

I am organizing my schedule (group & sort) by activity codes. For some reason, the activity "code value" and description is being displayed. I don't want the code value to be visible. Can someone help?
Links:
[1] http://www.planningplanet.com/forums/oracle-primavera-pm6