When queuing a plan, an error "Error starting plan invalid run parameters" is received.
When this error occurs it is usually caused by a glitch during the ingress of the configuration, which causes the configuration version to be malformed. By clicking the "Queue Plan" button in the workspace, Terraform Cloud will reuse the most recent configuration version. If the most recent configuration version is malformed, the invalid run parameters can occur.
- Make a no-op commit to the repository to trigger a new configuration version to ingress.
- Change the VCS settings in the workspace (such as selecting a different branch or disconnecting the VCS connection entirely) and then revert the change to try and trigger new ingress.
If attempting that does not resolve the issue, please contact HashiCorp Support.