Creating Vendor and Customer Records for Rebates and Trade Promotions
In NetSuite, an entity cannot operate both as a customer and a vendor. Some features provided to a customer entity are not available to a vendor entity. Similar limitations apply to a customer entity.
When dealing with vendors as payers, the Rebates and Trade Promotions SuiteApp lets you generate a bill credit (vendor credit). In NetSuite, you can only send invoices to customers, not vendors. If you want to send an invoice to a vendor, create a customer record for them. To create a customer record, see Creating a Customer Record.
If a payee is a customer entity, you can generate a credit memo. Since you can send bills only to vendors, you need to create a vendor record for customers. To create a vendor record, see Creating a Vendor Record.