# Deprecated API

## Contents

- Deprecated Enum Constants

- Deprecated Enum Constants
  Enum Constant and Description
  com.license4j.ModificationStatus.MODIFICATION_KEY_INVALID MODIFICATION_KEY_INVALID is never returned as of release 4.4.0 due to new special key feature. Since any string can be defined as a special modification key, it is not validated; directly send to server for validation and modification.