swanand,
Glynn C Williams is the BEST book in SD!
Every day I read from it, I learn from it.
Number ranges -
Business wants to differentiate between sales order and billing documents. One way to do that is by giving different number ranges. For example, sales orders start with 1, so range is 1xxxxxx to 19xxxxx.
Billing documents start with 8, so range is 8xxxxxx to 89xxxxx
Business might give different number ranges to billing documents and cancellation billing documents, check in VOFA.
In IDES, in VOV8, check the internal number ranges given for Returns, Rush orders, Free of charge, are all these having the same range or different?
Tip: Search in Google, for any question
If you give the message no. then you will get many solutions
tw