Unusual date / time stamp error when EXFMT is run

I have a DSPF wherein the user can either enter in some information for a 
report, IE: start date, end date, class and cat of freight.  when they hit 
the enter key the program will process the data and then submit the report 
to batch.

The DSPF has two date fields which are defined as type L, DSTARTDATE and 
DENDDATE, with a DATFMT(*USA) parameter.

If the user wishes to exit the program they simply strike the F12 key which 
in turn turns on *IN12 which is used to exit the program.

I set it up this way to allow the user to submit more than one report to 
batch....it loops until the *IN12 is turned on.  However if a user starts 
the program and then decides before entering any dates to F12 out, it 
generates an error when it tries to read the DSPF.....is there any way to 
avoid this problem?



If you bought it, it was hauled by a truck - somewhere, sometime.