Error while creating a GDS using FM

Hi

I ve created an extract structure named as ZZTEST with database view with few fields from MARA & MAKT

After copying the standard contents I renamed the FM as ZZRSAX_BIW_GET_DATA_SIMPLE & named the Function Group ZZRSAX

While activating am getting the following error message.

Could you help me........

Program SAPLZZRSAX

*18 "ZZTEST" must be a flat structure. You cannot use internal tables, *

*strings, references, or structures as components . *

If I am neglecting this error and activating this FM, I am getting an error in RSA3 while checking the extractor as

Error 6 in function module RSS_PROGRAM_GENERATE

Edited by: THERAK on Feb 4, 2010 9:28 AM