I need to know two User exits for
1) Number Ranges for delivery document
EXIT_SAPLV50S_001 is this the tight exit to be used .
I need to set number ranges for delivery based on plant.
2) User Exit for Partner determination
I want to fetch the partners from the sales doc .
which does not happen in my case as delivery happens through projects systems and there is no link between sales order -> delivery -> billing
only link between del-> bill exists .
An element called the WBS can be used to get the appropriate sales order from delivery.
I thought the exit EXIT_SAPLV09A_004 would help but my colleague has a different opinion.
Any inputs / logic on the same appreciated