COBCH1600 プロパティは GETTER または SETTER の少なくとも１個を定義する必要がある

A property has not been defined correctly, because it is defined without a GETTER or a SETTER phrase.

The following example shows the property myProperty with both the GETTER and SETTER phrases:

property-id myProperty string.
  getter.
  set property-value to field-1.
  setter.
  set field-2 to property-value.
end property.