I have now managed to get the field validations working.
I had not appreciated that each error notification needed to have a seperate Validation Show If applied. With that understood the Validation Show If is working.
This is an insert form.
When the insert button is applied and any validated field is incorrect then the complete form clears all entried so a user would have to begin the process again.
Is there a method which will prevent the correctly filled boxes from being emptied/deleted?
I tried using the Properties Lightning bolt
as on url
but this is a new insert so may not apply in this case.