A number of parameters are conveyed with the InitialDP:-
locationInformation:
This parameter indicates the whereabouts of the Mobile Customer, and the age of the information defining the whereabouts
mscAddress:
This parameter gives the mscId assigned to the GMSC/MSC. Generally, it aligns with the VLR, i.e. MSC/VLR (SSF/gsmSSF).
Align the MSC/VLR configuration.