>>If we move the first do case into the end of the loop, we would not need to execute it outside of the loop.
>
>I don't see it. When you encounter a new message (code = "MSH") you know have have finished the previous one. How can you know the last message has been processed when the code isn't "MSH"

I think I'm not following the logic now at all. The only thing I know is we have to somehow process the last record inside the loop, so we don't need to repeat SendCompleteMessage outside.

How can we do it I'm not sure.