how to cancel the Open quantity in the Purchase order

Summary:

We have a requirement where users will cancel the open quantity in the purchase order when they no longer receive the open quantity and to close the order.

we have suggested the process to cancel the open quantity by splitting the schedules with received quantity and open quantity by creating the change order. But there are more steps involved in this.

please suggest any other process where we can cancel the open quantity without changing the PO header status to Cancelled.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):