Can anyone tell me what this error is saying, i want to add the status ND - New Duct Required, it shows its in the list but the error is saying its not?

Can anyone tell me what this error is saying, i want to add the status ND - New Duct Required, it shows its in the list but the error is saying its not?

For what I get, you have to pass the value 4 that represents ND - New Duct Required.