Changes

An external reference is If a link to a Proxy instance via a property value. If the MetaProxyProperty has been configured with a defined [[Reference ]] it is defined as an External Referenceexternal reference. The An external reference property links to a Proxy will refer automatically to the instance of the targeted MetaProxy having the same entry in via its external Primary Key Property than the given Proxy instanceproperty value.{{Hint|When using external keys and external references it does not matter which object is created first (master or child), the linkage will be done!}}

Such Proxies (its properties) will automatically reference to the instance of the targeted MetaProxy (as given by the underlying Reference) having the same entry in its external Primary Key property than the given Proxy instance. {{Hint|When using external keys and external references it is not of relevant which object is processed first, as the linking will be done either way by the system!}} {{Attention|Only one External Primary Key Property external primary key property is supported for one per MetaProxy object. Hence, the External Primary Key external primary key can consist of only one MetaProxyProperty.}}