GitHub Actions
GitHub Actions reusable workflow input is missing a required type
Required if input is defined for the on.workflow_call keyword.
GitHub Actions reusable workflow inputs must declare a type. If the type is missing or invalid, the workflow definition is not valid.
Observed message
Required if input is defined for the on.workflow_call keyword.
Why it happens
- A reusable workflow defines an input but omits its type.
- The input type uses an unsupported value.
- A workflow was copied from a different syntax example and left partially configured.
How to fix it
- Define a supported type for every workflow_call input.
- Use one of the types GitHub supports for reusable workflow inputs.
- Validate the workflow after editing to catch schema mismatches before relying on it.
