I have designed my infopath template and did all settings which are described in the following document:
http://kb.k2workflow.com/Articles/KB000164.aspx
But when I want to submit the form an error occurs:
"There has been an error while processing the form.
Click Continue to resume filling out the form. You may want to check your form data for errors.
Click Start Over to load a new copy of the form.
Hide error details
An error occurred accessing a data source"
Thanks for your help