vijay,
We can't proceed with above mentioned return process since we don't have the reference Invoice. Please suggest me the best way to handle this.
@ Mr. TW: You have suggested to follow RE order > RE dlv (LR) > PGR > RE credit note, but can I enter external batch no in sale order?
In a project, for the few 6 months after GO LIVE, the field "Reference mandatory" was kept blank, in the return order type. This way business could handle issue faced by you.
So, in configuration, you can remove this reference mandatory and at a later stage, you can activate it again. Discuss this option with your client.
External batch no. - From my experience, we can not use external batch no., as batch determination validates the batch no. But probably, there can be was to enter external batch no.
TW