How can I update multiple purchase order distributions?

Summary:

We have many Purchase Orders in OPEN status in which the distribution accounting needs to be changed.

Content (please ensure you mask any confidential information):

The only REST api that I have found for updating the PO Distribution is the draftPurchaseOrder, but that means we have to change the status of all POs. Are there any other ways to perform this mass update without changing the PO status?

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