====== OwnLocationBackendReference ======
This function returns the stored ILN of the SystemPartner to the transferred GLN.
The second argument can be an //Auto-Add-Value// (True, False). If //True// is specified, the ILN is created if it does not exist.
==== Syntax: ====
OwnLocationBackendReference('GLN')
OwnLocationBackendReference('GLN', 'AutoAdd')