I am getting the following error while working on a "getting started" tutorial from bonita website. Error image attached.

"invalid entry form mapping. other mapping have the same name but have different id in "

I have defined forms for Pool and Manager review task. The tutorial is from this site 
<http://documentation.bonitasoft.com/getting-started-tutorial-2>

[![enter image description here](https://i.stack.imgur.com/vwcgM.png)](https://i.stack.imgur.com/vwcgM.png)