An automation that only one person understands is a single point of failure disguised as a productivity win. It works fine right up until that person is on holiday, changes roles, or leaves the business, at which point a process nobody else can safely touch either breaks silently or gets abandoned entirely rather than fixed. Both outcomes cost more than the documentation would have, which is exactly why treating it as optional rarely holds up in practice.
What documentation actually needs, beyond a vague description
A one-line summary of what the automation does isn't documentation, it's a title. Useful documentation covers the trigger that starts it, each major step in plain language, what happens when something goes wrong at each of those steps, and where to look when it clearly isn't working as expected. This doesn't need to be exhaustive line-by-line technical detail, it needs to be enough for someone unfamiliar with the specific build to understand its logic and safely make a small change.
Screenshots age badly, plain-language logic doesn't
A screenshot of a specific tool's interface becomes outdated the moment that interface gets redesigned, which happens regularly on most platforms. Describing the underlying logic in plain language, when X happens, check Y, then do Z, survives a platform redesign in a way that a screenshot-heavy walkthrough doesn't, even though screenshots feel more immediately helpful when first written.
Document the exceptions, not just the happy path
The main flow of an automation is usually the easiest part to understand just by opening it and reading through the steps. What's genuinely hard to reconstruct later is why a specific exception gets handled the way it does, why a certain record type gets skipped, why a particular condition triggers a manual review instead of continuing automatically. That reasoning lives in the original builder's head unless it's written down explicitly.
Keep documentation next to the automation, not in a separate wiki
Documentation stored somewhere disconnected from the actual automation tends to drift out of sync as the automation gets tweaked over time, since updating a distant wiki page is an easy step to skip under time pressure. A brief description field within the automation platform itself, or a linked document referenced directly from the tool, stays connected to what it's describing in a way a separate system often doesn't.
What good documentation prevents, concretely
Without it, a small workflow change from a connected app, a renamed field, a new required value, can silently break an automation with no obvious trail back to the cause. With clear documentation of what each step expects and why, that same investigation takes minutes instead of hours spent reverse-engineering logic nobody wrote down.
A minimal template that covers the essentials
- What triggers this automation, and what conditions need to be true for it to run
- The main steps, described in plain language rather than tool-specific technical jargon
- Known exceptions and how each one is currently handled
- Who to contact and where to look first if something appears broken
This takes perhaps twenty minutes to write for a moderately complex automation, and it's twenty minutes that pays for itself the first time someone other than the original builder needs to troubleshoot it, which is exactly the scenario every properly built automation project should be planning for from the start, not treating as an unlikely edge case. Teams that skip this step almost always regret it at the least convenient possible moment, usually when the original builder is unreachable.