Usage "FREE" in Free Goods Configuration

Hi,

Please give me the name of the Program or Function Module where the Hard Code is being used for detering the itemcategory of Free goods as "FREE".

We want to copy this "FREE" and use it but it is not working as it is hard coded. I know the Usage is being used in CMIR but that is not working. Unless we use the word "FREE" in free goods configuration it is not working.

Please provide us the name of the program or Function Module wherein this Hard Code is has been used in SAP.

Thanks,

Jans