i wrote below code for populate data for yyeisbe.
Anything to add to this code.
WHEN '0MAT_PLANT_ATTR'.
C_T_DATA_TAB = C_T_DATA.
LOOP AT C_T_DATA_TAB INTO C_T_DATA_WA.
L_TABIX = SY-TABIX.
C_T_DATA_WA-yyeisbe = C_T_DATA_WA-eisbe.
MODIFY C_T_DATA_TAB FROM C_T_DATA_WA INDEX L_TABIX .
ENDLOOP.
C_T_DATA = C_T_DATA_TAB.