Invoice and despatch from different states

Hi team,

A company from Tamil Nadu purchases material from the vendor who is located in Karnataka. Vendor raise an invoice by his Karnataka GST number. But the material are stored in Andhra pradhesh and the this place is not registered under GST. The despatch is to be start from Andhra Pradesh. 

Here, how to generate e-way bill on this invoice since the value is around Rs.80Lakhs

Give me your suggestions in light with the provsions of GST.