OPNQRYF fun

Hello Everybody,
I trying to extract the year portion of a  6, 0 MMDDYY date 
using OPNQRYF.

I'm using a MAPFLD like this:
                      MAPFLD((TRAN_MM 'FTRNDT / 10000' + 
                                    *ZONED 2 0) (TRAN_YY 'FTRNDT / 100' +  
    
                                    *ZONED 2 2))                           
      

So I'm defining transaction month, TRAN_MM, as the transaction date
divided by 10000, with a length of 2.  This works fine.

My problem is with TRAN_YY.  I'm trying to divide the 6 digit date by
100, and use the 2 digits that make up that remainder as the year.

I keep getting a: CPD4002 - Key mapping error in field FTRNDT.
I get about 20 CPD4002's and then a CPD4274 - Key mapping error
for member FILENAME.

What am I doing wrong?
TIA,
Dave
                                                    
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