inf-server-3.pngsomeone has added unnecessary enhancement in Program RM_MEPO_GUI which is responsible for ME21N. ( Line 51 to 56 in attached file) How I can deactivate this Enhancement ?

Hii. I am a sap mm user. While executing Me21n (Purchase Order) I am getting a message ( Hi there You have successfully done function enhancement) . On me21n screen whenever I try to enter material number system throws me out to start screen .. ...