Change Mandatory fields to optional only for Emergency addr in portal

Question

Hi All,
I have requirement where in I have to make few fields in emergency addr screen as optional and change one optional field to required field.
My problem is that in addr DC single detail view screen is shared for Permanent addr and emergency addr.
I found sap note: 1498555 and How to hide or make the same field mandatory in emergency/permanent address and as per this note we can handle this by changing property - State from required to normal and vice-versa, BUT doing this effects both screen permanent and emergency addr.
Can this be handle from backend configuration in V_T588MFPROPS V_T588M V_T588MFPROPC  for mandatory optional and if YES than:
1.  Do i still need to change UI property - State from required to normal and vice-versa (which I dont want to change as it affects both type of addresses screens)
2. Which configuration is of higher priority , I mean if the field is kept as optional in nwdi but in backend in  V_T588MFPROPS V_T588M or V_T588MFPROPC it is still Mandatory than will the user see astrick mark on the field that it is mandatory? or it will madatory but astrick wont be visible? or the field will be optional?
I know I have asked to many Qs but being a portal person I have very limited insight of backend ess config. Any help/pointers would be highly appreciated.
-JJ

Answer 1

read note 1498555
table V_T588MFPROPC
and in these you can set the fields accordingly
Also if you need extra check use this
CL_HRPA_INFOTYPE_0006_XX->SPECIFIC_COMPUTATIONS
XX for country you are using
You can do at the subtype level too, so check at this level