Workflow Will Not Compile v2

Compilation errors occur when there is an invalid Workflow design or a dependency cannot be referenced.

Start with the first diagnostic

Open Problems and select the first error. Use its Step, Property path, code, and message to navigate to the affected content. Later errors can be consequences of the first one.

Check the authored definition

Confirm valid YAML indentation, mapping/sequence structure, and exact field casing.
Keep required top-level Parameters, Steps, and Returns shapes.
Give Steps unique names and use exact discovered Node versions and Methods.
Confirm Parameters and Returns match the selected Method contract.
Resolve invalid container placement and forward or out-of-scope references.

Check expressions and types

Verify braces, Step and Workflow paths, function names, argument counts, operators, and quoting. Confirm scalar, Object, Array, and Stream shapes agree with the consuming Property. Aggregate functions have container and collection restrictions.

Use Preview for a compile-time sample, but remember that it does not call external Nodes.

Check interfaces and dependencies

HTTP and MCP Workflows require one matched root respond Step.
Schedule definitions must parse and produce a future occurrence.
Connections must match the required Node/version and selected Cluster.
Sub-Workflow Parameters and Returns must match the current child contract.
Embedded C# must expose one valid attributed class and Method and use valid package declarations.

Repair and verify

Change the smallest affected region, wait for idle validation or run Preview, and confirm the original error is gone. Repeat until there are no errors, then Debug the complete path. A successful parse alone does not prove runtime behavior.