E way bill and E invoice for same GSTIN?

ERPNext
1

If my customer and company belongs to same GSTIN , Is it possible to generate e waybill and e invoice?
Is there any rules.

2

Hello,

You cannot generate an e-Invoice for the same gstin billing.
e-Waybill can be generated for the movement of goods.

In the India Compliance App, you can generate an e-Waybill using Delivery Note.