Send Material to Vendor without Invoice

Q1. Is there any way to Send Material to Vendor without Invoice?
Q2. Is there any way to receive the material from vendor without Purchase Order?

Hi,

Q2. If you want to receive material from vendor without purchase order then you can
create “Stock Entry”(with Purpose- Material Receipt)

Shraddha Ranjane
New Indictrans Technologies Pvt. Ltd.

I appreciate if you can tell me what is the use of Purchase Invoice?
And how we can raise Purchase Return Invoice to Vendor (in case of rejection)?

Purchase Invoice :- It is the bill that your Supplier sends you for products or services delivered.

Refer link:- https://erpnext.com/user-guide/accounts/purchase-invoice

Purchase Return - https://erpnext.com/user-guide/stock/purchase-return