Any help would be greatly appreciated.  Note: I'm using Infopath 2003.

I have developed a form which users need to complete and submit when seeking
approval to attend training courses. Upon submission, the form goes to the
user's manager who then has another section to complete to either allow or
disallow the request. This section only appear after the original submission.

Normally with Infopath forms, when a user has not completed a mandatory
field and tries submitting the form, Infopath presents the user with a dialog
box message along the lines of:

"The form cannot be submitted because it contains validation errors. Errors
are marked with either a red asterisk (required fields) or a red, dashed
border (invalid values)."

However, with this form I get a dialog box with the following message:

"Some rules were not applied."

This box also provides a "Show Details" button for users to click on to then
be presented with a text box containing the usual message. This message box
and text box are not very user-friendly and I know will cause confusion for
many users.

Obviously this is happening because the submit button is set to use Rules
and Custom Code as the action.

How do I get the form to behave the same way it would if the submit button
was set to use "Submit" as the action. I need to use rules because I have
designed the form to change the value of a field upon submission.

Any help would be greatly appreciated.

Thanks.