Hi JM,
That is a very close solution, however the customizing to activate this VPRS update function is at the company code level which means i cannot activate this function at the billing document type level which is making my life difficult. The problem is, once you activate this function at the company code level. then the VPRS of all billing types will have to be manually updated with this function. They will no longer be updated during billing.
But my requirement to update the VPRS function is only specific to certain billing types. Back to square one again!
If the customizing can allow me to limit the usage of this function at the billing type level then it will be great!