The port 'TestServiceGroup' could not be deployed.\nError: The port 'TestServiceGroup' has no service operations.

Solution:

This error comes up when we are trying to deploy a service group and create a inbound port.
And the service that is added to the service group has no operations added to it.

• Go back to AOT > Service >'Service with error' >Operations > right-click and click Add Operation.
• A new 'Add Service Operations' form is opened up.
• Select the Operations to be added by marking the checkbox >Add.
• This will add the operations to the service and the service group will now deploy without any errors.

Note: 

• Operations once added will not be visible in the form.
• The operation is a method of the service contract class and applies the [SysEntryPointAttribute] to it.