CE Join is getting error

Hi Experts,

Script:

BEGIN

col_tab1 = CE_COLUMN_TABLE("SAP_ECC"."VBAK","VKORG","VTWEG","NETWR");

col_tab2 = CE_COLUMN_TABLE("SAP_ECC"."TVKO","WEARKS","LIFNR","ADRNR","KUNNR","VKORG"); 

var_out = CE_JOIN(:col_tab1,:col_tab2,["VKORG"],["VTWEG","WEARKS","LIFNR","ADRNR","NETWR","KUNNR","VKORG"]);

END /********* End Procedure Script ************/

Error:

Message :

  Validation failed, no measure defined in a reporting enabled analytic or calculation view

Semntics:

NETWR has been already defined as a measure.

Please check and suggest.

Thanks.

Br,

Ed