Find the SetCurrentLine in Business Partner /Addresses/ billing address

Question

I am using B1 2004.2 B
In this below example:
            oBp.Addresses.SetCurrentLine(0)
            oBp.Addresses.AddressType = BoAddressType.bo_BillTo
            oBp.Addresses.AddressName = "Test1"
            oBp.Addresses.Add()
            oBp.Addresses.SetCurrentLine(1)
            oBp.Addresses.AddressType = BoAddressType.bo_BillTo
            oBp.Addresses.AddressName = "abc"
My requirement is to synchronies the BP master with another database.
I have some issues in Business Partner /Addresses/ billing address.
How to find the SetCurrentLine in  oBp.Addresses.SetCurrentLine(XYZ)?
I see a Line number in CRD1 table, is that refers to the line number which I can use in oBp.Addresses.SetCurrentLine(xyz) ?
I tried it but it fails, the line number is based on the order in which the records are displayed in the BP/Addresses/ billing address Screen.
For example:
Address          Linenum
Abc               1
Test1               0
In the above example “Test1” is added first and “Abc” is added second.
So the line number is 0 and 1.
When the records are displayed in BP/Addresses/ billing address Screen,
it displayes “Abc” first and “Test1”as second record.
So according to the screen display the “Abc” is line 0 and “test1” is line 1.
But in the database the values are vice versa. So when I want to update the
Values using the DIAPI , I need to know the value for SetCurrentLine(XYZ)
How can I find it?

Answer 1

Line number in CRD1 table has nothing to do with SetCurrentLine.
SetCurrentLine index depends on the order of
the records displayed in BP/Addresses/ billing address Screen, which is sort by
Name.