CSV upload Vendor Return Authorization for Interco Transaction

Dear Experts,

Need advices to understand if there is any functionality in NetSuite that allows us to mass import Vendor Return Authorization for Interco Transaction.

Right now, if there is no PO created for Interco Vendor Return Authorization, I’m unable to create this transaction.

The requirement is that the customer actually do a bulk upload of all POs including Interco PO and sometimes there are Vendor Return Authorization for these interco POs and they need it to be created in bulk as well instead of creating them manually.

Any feedback/proposed solution like customization is well appreciated as well.