Amend a purchase through a change order
What It Does
A regular amendment values the unused original purchase and its proposed replacement, then creates a linked change order. Product modification and Accounting settlement complete the change after any extra payment.
The Flow
When Something Fails
Execution is transactional, but later work is carried forward. Replacement deadline void restores the original line. Acceptance's unretired follow-up can leave the amendment awaiting payment after the replacement is paid, and future-effective changes have no automatic executor.
Open Design Questions
Live amendment choices are absent from the console. Scheduled execution and acceptance recovery need defined implementations.