Resolution:
The reason you are seeing this message is because the formflow is not deployed in the current Workflow Desktop. If you want to make all formflows available in your workflow application, you need to include all of them in the formflow archives when creating the ear file.

For example, in the sample [ExpenseRequest], when creating the ear file, you will see following list of formflows - - ApproveExpenseRequest.formflow
- submitExpenseRequest.formflow
specified in the Formflow archive.
That means, only these two formflows will be available once you deploy this workflow application.

If you launch other formflows,  you will see the following error message -
"This formflow is not part of the workflow application. Please contact your system administrator."

In Tomcat server under BW Workflow, you can find out the list of deployed formflows for your workflow application from the
WEB-INF/BWConfig.cfg under the following property -
Config.Primary.Partitions

Also, as mentioned in the TIBCO BW Workflow Administrator's Guide -> Appendix A (Creating a Deployment Platform) -
In development mode, each web application must run in a dedicated servlet engine instance using a unique port number. This means that for each Enterprise Archive built, a separate servlet engine instance must be configured and registered using TIBCO Domain Utility.
This limitation is NOT present when the deployment is done in "Production" mode.

I am getting the following error while trying to launch a formflow -"This formflow is not part of the workflow application. Please contact your system administrator."How do I proceed?