How do we correct an error once a campaign has many versions in circulation?
When a campaign has lots of versions out in the world, fixing one mistake means finding every place it lives. Plan for that before the first asset goes live: know which versions exist, who can swap each one, and who gets to pause the campaign.
Faster content production means more material that might need correcting. Keep an inventory of the approved versions and where each one runs. Note which owner can replace each asset and whether a partner has to make the change. A folder of creative files may not show what's in circulation right now.
Decide how the team sorts errors and who calls a pause. A typo and a misleading product claim can need very different responses. Follow your organization's existing requirements for customer communication and escalation.
Then practice. Pick a sample claim and locate every version that contains it. If the team can't find them all, improve the inventory before you make more.
After a correction, check the actual placements where you can. A revised source file is progress, but it doesn't prove every audience sees the corrected message. Record what changed and anything still waiting on a partner.