Why CHAIN not found record?

[Tomasz SkorÅa <t.skorza@xxxxxxxxxxx>]

Hi guys and girls again :-)

I have a problem with chain operation - it doesn't found record but it 
exist in file.

I have some Logic File where key fields are:
ISBCT  K01 Batch Count. . . . . S     6 0 (numeric)
ISMCU  K02 Cost Center. . . . . A    12    (char)
ISTRDJ K03 Transaction Date . . S     6 0  (numeric)
and rest of fields..

in RPG program I have

definition:
FF57217C2  if   e             disk

work field definition
D PSDOCO          S              6  0

at first I run SQL statement where I retrieve field PSDOCO.

then if PSDOCO is not zero I run this code:

 /free
      CHAIN PSDOCO I57217C;
      IF %FOUND;
      E3$FM# = IS$FM#;
      ENDIF;
 /end-free

Field IS$FM# is in F57217C2 file, I57217C is record in F57217C2, when I 
check with runqry I find record with key field PSDOCO - it is one 
record. I ahven't any omit in logic file.

But If I call RPG statement it doesn't found it? Why?

Regards

Tomek