Where Clause

I have setup a test sqlrpgle program with the following in the c spec and I 
am immediately getting a compiler error about the where clause not expected 
valid tokens from, into:

any suggestions would be appreciated.

 C/EXEC SQL                                         
 C+ DECLARE CUSTCURSOR CURSOR                       
 C+ FOR SELECT ILNINV#A, ILNSOLDTO, ILNSTK,         
 C+ ILNDESC, SUM(ILNEPRICE), SUM(ILNEUAVCST),       
 C+ SUM(ILNEPRICE) - SUM(ILNEUAVCST) AS MARGIN,     
 C+ FROM IMPILN00                                   
 C+ WHERE ILNVDATE >= :SDATE AND                    
 C+ ILNINVDATE <= :EDATE GROUP BY ILNINV#A,         
 C+ ILNSOLDTO, ILNSTK, ILNDESC ORDER BY MARGIN DESC 
 C/END-EXEC                                         

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