Both pump head and pump curve are locked
The error message
The parameterisation of the pumps can be done through 2 methods.
By filling in the design pump head (which Hysopt will use to calculate a pump curve)
By filling in the pump curve (which Hysopt will use to calculate the pump head).
Filling in both pump head/pump curve does not allow Hysopt to perform this calculation, therefore one of the 2 should be unlocked.