Dear Yash,
You intial description is not very clear to me. As you must know remittance advice is issued by a company to its vendor to inform them that their payment is done. That is it is usually associated with payment. So when you say, we want to issue remittance advice to some vendor created for some other company code it is not very clear to me. Is it about alternative payer? Can you please elaborate?
Kind Regards
Soumya Rao