Sounds like the list  you are working with is the problem. Can you export  to
Excel using another list?

I'm only speculating but I suspect that some list items were added to the
list, then the list was altered to include new required fields, then
additional items were added to the list.

The export code may not know how to deal with the initially added list items
that do not have any values for the new required fields. I didn't get a
chance to test this theory.

As exactly as per you theory, we created a list  & then tried to
modify the contents of the list/added few for survey  questions.
Is there any steps to solve this issue?


Is there any other ways/steps/methods for exporting the database to
other application(s)like Access 2003.

Sure, you can edit the rows  that were created before you added the new
required field(s) to have a value instead other than null.