I want to start the Watson IBM Bluemix Natural Language Understanding (test version) but when creating such an instance online (Free service as the website indicates) I get the error 'The service instance is invalid: not a valid service plan':
Could you anyone elaborate a bit on how to fix this or if this is due to the test version I am using?
You can provision the Natural Language Understanding on Bluemix using this link:
https://console.ng.bluemix.net/catalog/services/natural-language-understanding
After visiting the link, you will arrive at this page:
Click Create to create a new service instance with the Free Plan.
After clicking Create, it will provision an instance of the service which should look like this:
If you have any issues with this process, you should contact Bluemix support.
