As per note 1561427 - Billing document split
I came across the below
The following known causes produce billing split.
The resulting invoices have different header partners or different header fields in VBRK.
The split analysis shows what are the different fields, partners.
Notice that a partner is considered different whenever one or more fields of table VBPA is different.
My question is
1)Different header partners in VBRK table we could two partners SP,PY.
System takes Sold to party also into consideration?If so what about Bill to party
2)Different header fields-what are those fields?
Kindly help me out.