The Form Process Launch plug-in action is not enabled / missing from the list in composer.
Please set the following values to true for the below key in the composer web config file:
Go to IIS
Explore the composer site
GO to the web config file of composer and open it in notepad
Search for the following values:
<add key="onNPIFeatureParentChild" value="False" />
Set its value to "true" and then save it.
Do an iisreset and rerun the composer and then rerun the scenario.
If the key is not found in your Web.config go to the below location on your server were your IIS is located and add the key to your Web.config.
Please add this key to your Web.config in case it is not found:
<add key="onNPIFeatureParentChild" value="true" />