Navigate to the VA01 Overview screen in SAP and open the 'SAPMV45A.E4001.sjs' script file. Create this file if it does not already exist. All additions will be made to this file.
The VA01 overview screen appears as follows:

Change the header of the 'Material' column in the All items table to the new header 'Test Material'. The code is as follows:
columnheader("All items, Material", "Test Material");
The screen will now appear as shown below::
