Replace Tax-Zone Rates and Payable Links
What It Does
A zone save replaces its rate collection atomically, including each rate’s percentages and per-unit payable links. Fresh identities distinguish the new rates. Issued documents retain their tax amounts and loose references to the earlier rate identities.
The Flow
When Something Fails
The save rolls back completely if validation or a reference fails. The material risk follows a successful replacement: an issued line no longer finds its original rate’s payable link at posting. The batch then uses the unit default or refuses the document if no default exists. There is no compensation or screen warning for the changed destination.
Open Design Questions
Product must choose stable rate identity, an issue-time payable snapshot or an accepted and warned fallback. That choice must remain consistent with the recorded posting-time account resolution and the Commerce tax transition.