We're using the BAPI_CUSTOMERCONTRACT_CHANGE to update Contracts, which is nothing but updating fields in VA42.
However for some reason it's not updating the Billing Plan date in the line items.
Version: SAP 4.7 R/3 Enterprise.
All OSS notes are up to date.
How to pass data for billing plan in the BAPI.
Any feedback regarding this matter is highly appreciated.