Definition
Undo, or rollback, reverses an applied change by restoring the previous values, such as the old budget or status. Not every platform operation can be reversed, so good tools label irreversible changes up front.
Also called rollback, revert
MegaMCP glossary32 terms
Explained
To undo, a system must record what it needs at the time of the change: the old value, or the ID of what it created. Without that, “undo” is guesswork.
In MegaMCP, undo creates a new reverse plan with its own diff and approval. Operations that can't be reversed, such as sending an email or deleting a GA4 data stream, are marked before you approve.