Change order
In accounting, change order means a written, approved amendment to a purchase order or contract that changes its scope, price or dates. The original is kept and the approved total moves by the change, so the history shows what was first agreed.
Not a rule. Commercial practice — not codified. US GAAP governs recognition, measurement and presentation, not bookkeeping mechanics. Sources
What it is not called
Each of these means something else. Use one here and an accountant reading the product notices.
- revision
- overwriting the PO
Nearby in the catalog
No component names this concept outright. These sit in the same part of the system.
Also in Payables
Defined in Lexicon. This page is generated from that document, so the two can't disagree.