Control Breacks

Hi,

When i am using the below code i am getting Right hand fields are *** how to over come this...

LOOP AT GT_CRED.

AT END OF CHANGENR.

GT_OUT-EDOKN = GT_CRED-OBJECTID.

GT_OUT-EBELP = GT_CRED-TABKEY+10(5).

GT_OUT-ERDAT = GT_CRED-UDATE.

GT_OUT-ERNAM = GT_CRED-USERNAME.

APPEND GT_OUT.

ENDAT.

ENDLOOP.

Regards

Reddy