SQL precompiler problem.

I keep getting this error,

SQL5011  30     601  Position 54 Host structure array MAIN_TABLE not defined
                     or not usable. Reason: The datetime format of a member
                     of the host structure array does not match the SQL
                     datetime format.

I have two programs using this table, and one compiles fine and the other blow up with this error. I have,

ctl-opt datfmt(*ISO);

in the program and

exec sql
  set option commit = *NONE,
             closqlcsr = *ENDMOD,
             naming = *SYS,
             alwcpydta = *OPTIMIZE,
             datfmt = *ISO;

For sql options.

the data structure is the same in both programs so I don't know why one would compile and the other does not??