STEPS TO REPRODUCE
First edit document-routing-dashboard-actions-contrib.xml and enable the following actions:
Then start your nuxeo instance and:
- Start the 'Parallel document review' default workflow on a File Document.
- Go to Workflow Main tab (Top menu bar)
- Select the listed Task and click 'Process'
- See that the end_date which is required is not required.
- Click on validate
The validation does not apply