Format Project and WBS code

Dear All,

How to make the code/ format project can be same with WBS. In other words, the code will not really different.

For example :

Project definition : PHREPBL0801

WBS will be : PHREPIF08-BK

PHREPIF08-BK-KK

PHREPIF08-BK-KD

PHREPIF08-BK-BB

PHREPIF08-BK-BR