Flow Deployment
Deploying a new flow version doesn't activate it, and an inactive flow silently does nothing until someone flips the switch.
Definition
Flow metadata deploys as a Flow definition plus one or more numbered Flow versions, but a deployment doesn't automatically activate the version it just shipped: a flow can deploy successfully and still be inactive, meaning any automation it's supposed to run simply doesn't fire, with no error to flag it. Salesforce also blocks deleting or deactivating a flow version that still has paused, in-progress interviews, common with wait elements or scheduled paths, which can block a deployment that includes a flow change until those interviews finish or get resolved. Because each save creates a new version rather than overwriting the old one, orgs accumulate inactive historical flow versions that clutter metadata retrieval and make it harder to tell which version is actually running without checking Setup directly. Our CI/CD pipeline guide covers automation deployment as part of a build.
How it works in Serpent
Serpent's preflight checks flag flow deployments that would leave automation inactive or blocked by in-progress interviews before the release ships, and delta deployment keeps flow changes scoped to what actually changed instead of redeploying every version. See release management in Serpent for how preflight checks work.
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