For Billing related point,
I have got some Enhancements which seems to be useful. For Sales Order I will keep analyzing.
V60A0001 Customer functions in the billing document
V60P0001 Data provision for additional fields for display in lis
SDVFX005 User exit reserves in transfer to accounting
SDVFX008 User exit: Processing of transfer structures SD-FI
SDVFX009 Billing doc. processing KIDONO (payment reference numbe
SDVFX010 User exit item table for the customer lines
SDVFX011 Userexit for the komkcv- and kompcv-structures
Do let me know if you have used any and have worked on similar requirement.
Regards,
MJ.