Eway invoice and eway bill

Dear Sir

I have a question
that my client is a registered dealer is liable to generate e invoice. usually he places order to his supplier i.e Mr A to send the goods directly to his buyer i.e Mr C and Mr A generate e waybill against sold goods to my client under the provision of "BILL TO SHIP TO". and my client does not generate any e waybill. and same e waybill reference which was generated by Mr A provideds to Mr C.

Sir please clarify that his way of business is correct or my client should also generate e waybill or not.

My client plea is that goods are directly dispatched from Mr A place to my buyer Mr C place and Mr A had issued a e waybill,
and goods are not supplied from my place therefore I am not liable to generate e waybill if I also generate e waybill again for the same goods that e waybill would be twice for the same material.

Sir my client dose generate e invoice but he dose not generate ewaybill. My client way of business is correct under the bill to ship to or should he also generate eway bill

Sir, if possible , please resolve my problem
Thankyou