All items belonging to the jboKeyfieldDescriptor class describe keyfield objects. This class is derived from the com.sap.bapi.jboSimpleParameterDescriptor. Application programs can use the jboKeyfieldDescriptor class to retrieve information about any keyfield described in the com.sap.bapi.jboSimpleInfo class. Applications can then use this information to set values to the keyfield by using the Core Reflection API.