This problem analyzer helps you deploy changes to Flow Definitions.

If you're using version 44 (Winter '19) of the metadata API to compare and deploy your metadata AND you include any Flow Definitions, we'll warn you.

Salesforce made many changes to how flows and flow definitions work. In fact, you no longer need to use Flow Definitions to activate Flows, and Salesforce even suggests that you stop using them.

One reason to stop using them is that Flow version numbers aren't carried across between environments, so there's no guarantee that version 2 of the Flow in the source organization is the same as version 2 in the target organization! This also means that your source Flow Definition can specify an active version that isn't present in the target.

If you try to deploy a Flow Definition that references an invalid version number as the active version, your deployment will fail.

We'll show you a warning. This will then let you decide whether to deploy the Flow Definitions or remove them from your deployment.