The Global Order Promising REST service allows organizations to override the percentage of supply that is assigned to an allocation node with a specific quantity. This feature is particularly useful for meeting short- term fulfillment requirements. The override applies to the total amount of supply that has been allocated for the week1.
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Oracle Fusion Cloud Order Management 23A New Feature Summary2
Use REST API to Adjust Allocation Percentages1

This function cannot be combined with other methods
This function cannot be combined with other methods because it is a standalone settlement method that closes the original invoice and creates a chargeback for the value of the claim.A chargeback is a negative invoice that reduces the amount owed by the customer and is applied to the original invoice1.This function is used to settle invalid invoice deductions, such as short payments, discounts, or disputes2.Other settlement methods, such as credit memo or debit memo, are used to settle valid invoice deductions, such as allowances, rebates, or promotions3.
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Chargeback
Oracle Accounts Receivable Deductions Settlement User Guide
Settle Claims Using Credit Memo or Debit Memo

Supplier part numbers are created and maintained in the Product Information Management functional area.
This is where you can define and manage items, such as products, services, and components, that you sell, buy, or use in your business processes. You can also associate supplier information with items, such as supplier part numbers, lead times, and prices. Supplier part numbers are used to identify items that you purchase from suppliers or sell to customers using the supplier's terminology.
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Overview of Product Information Management
Manage Supplier Part Numbers