Embedded SQL - fetching into DS with Like over Template DS

Just to add to my personal confusion...
(first time working with SQL's Fetch)...

Here's my Declare:
C/EXEC SQL                          
C+ DECLARE ORDHDR CURSOR FOR        
C+ SELECT OHNUM, OHBILL             
C+   FROM ORDPHDR                   
C+  WHERE OHKEYDATE >= :BegOfCurYear
C+   ORDER BY OHBILL                
C/END-EXEC                           

Here's my Fetch:
C/EXEC SQL                                        
C+ FETCH FROM ORDHDR FOR 50 ROWS INTO :OrdHdrDS   
C/END-EXEC                                        


Here's my DS:

D OrdPHdr_Tmpl  E DS                  ExtName( OrdPHdr) Based(@)  
D OrderNum        S                   Like( OrdPHdr_Tmpl.OHNum ) 
 //  Data structure to hold Order Header records read by SQL     
D OrdHdrDS        DS                  Occurs(50)                 
D  Ord                                Like( OrdPHdr_Tmpl.OHNum ) 
D* Ord                                Like( OrderNum )           
D  BT                            9P 0    


So, as shown above, the SQL compile fails.
If you comment out the 1st 'Ord' in the DS and uncomment the 2nd 'Ord'
in the DS, the compile will be successful.  What's the difference?


Kurt Anderson
Application Developer
Highsmith Inc