Duplex printing

We have a printer which is capable of duplexing.  It is IPDS and attached via TCP/IP.  When I attempt to send a document to it to be printed in duplex mode, I receive the following message.  I have a similar printer (IPDS) attached via twinax which does the duplexing fine - same spool file for both.  Anyone know where this message is originating from - the printer hardware, printer software, or OS/400?  Any ideas on how I can get this to duplex?

Thanks,
Dave

                         Additional Message Information                       
                                                                              
 Message ID . . . . . . :   PQT2769       Severity . . . . . . . :   40       
 Message type . . . . . :   Information                                       
 Date sent  . . . . . . :   03/22/00      Time sent  . . . . . . :   10:02:38 
                                                                              
 Message . . . . :   Device PRT03 or all the input drawers you specified cannot
   support two-sided printing.                                                
 Cause . . . . . :   An error was found while processing file PRT198 number   
   0014 in job 314062/LELAND/QPADEV001S. You specified, in the form definition,
   that the file was to be printed on both sides of the paper on device PRT03.
   That device, or all of the drawers selected in the form definition, cannot 
   print on both sides of the paper. If you specified absolute fidelity,      
   processing of the print request ended. If you specified content fidelity,  
   the file was printed on one side of the paper.                             
     The error was detected with reason code 3.  The reason codes have the    
   following meanings:                                                        
     1 -- Error in spooled file PRT198 number 0014 for job                    
   314062/LELAND/QPADEV001S.                                                  
     2 -- Error in external resource F1DFLT in library  of type *FORMDF.      
     3 -- Error in inline resource F1DFLT of type *FORMDF.                    
 Recovery  . . . :   You need to select one of the following options:         
       -- Submit the print request to a device that is capable of two-sided   
   printing.                                                                  
       -- Specify a form definition that uses one-sided printing.             
       -- Change the input drawer selection to a drawer that supports two-sided
   printing.                                                                  
       -- Enable two-sided printing if the selected drawer has two-sided      
   printing currently disabled.                                               
 Technical description . . . . . . . . :   The internal message identifier (ID)
   is SMSGX001.                                                               
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