LSMW error display

Dear all,

when iam upload the gl accounts through LSMW i getting this type of error ie. SYTAX ERROR IN PROGRAMM/ICADMC/SAP-LSMW.CONV_00000020

LINE ITEM 165

LSMW_GL ACCOUT MUST BE A CHARECTER TYPE FIELD (DATA, TYPE, C, N OT T) WHERE I HAVE TO RECTIFY .

wHEN I AM CREATING .TEXT DOC FILE WHAT TYPE OF HEADING SHOULD GIVE TO THE FILDS. SHOULD I GIVE THE TCODE AS A OBJECT HEADING. PL CLARIFY MY DOUBTS.

RGARDS,

GIRIJA