EKKO-GRWCU field got changed during the debug but not able to find the field

Dear Team,

There is simply a header alteration captured successful the log during a debug transaction. It was not expected to alteration the header information but someway it happened. The tract which got changed is EKKO-GRWCU. But I americium not capable to find that tract successful the header level. May beryllium I americium not checking the close place. Could you delight suggest which tract is this and nether which tab of header data.