Whenever an error is encountered by the application, an error page is
presented that shows the related error message. If an error occurs, you
may always use your browser's back button to back up to the previous
page, correct any data entry errors, and retry the operation. If an
interaction produces a repeatable failure, it may be necessary to seek
help or report the problem.
Error pages will include a note or link at the bottom that indicates
what to do to report your problem.
Consider the following regarding errors:
If the network or server is down or unavailable, the application
will be unavailable until these resources are properly functional.
One should be careful when entering data values into text fields.
Generally, text should be left aligned and should not contain
excessive spaces (blank characters actually typed into the field) to
the left or right of entered data.
When errors are presented for a page that can affect updates to
more than one record, each record update that caused an error will
be presented. In this situation the update will be performed as an
all or nothing transaction; so, either all requested changes will be
made, or none of the requested changes will be made.