The old cover stayed live for weeks and nobody did anything wrong

A documented failure where nobody did anything wrong

One documented case: the old cover ran on the website for weeks after a redesign. The store listing and the digital edition were both updated correctly and on time. The website update was a different person's job, and nobody told that person anything had changed. A buyer saw one cover on the page, paid, and opened an email with a different cover waiting for them.

Nobody did anything wrong in that story, which is exactly the problem. A failure that needs somebody to be careless is rare. A failure that only needs two correct jobs and an unowned gap between them happens constantly, in every kind of release, not just a cover.

The fix: a register with a named owner

Keep a written register of everything that appears in more than one place: cover, price, title, description. Name one person who walks that register the same day anything on it changes, not whenever they next think to check it. Walking the register means three things, done the same day as any change: open every surface on the list, compare each one against the canonical file, fix any mismatch before moving on to the next task.

A register nobody owns is a document. A register one person walks on the day of a change is the thing that actually stops the gap from opening.

What done looks like

A written register exists, naming every surface a cover, price, title and description live on. One person is named as the owner, with a rule that they walk the whole register the same day anything changes, not on a schedule. Changing one price and checking that every surface agrees within a day is the test that the register actually works.