ChannelResolutionErrorCode

Why the runtime target could not be resolved.

Value
`main_branch_environment_missing`
`target_environment_missing`
`environment_deployment_missing`
`environment_deployment_not_ready`
`environment_deployment_unhealthy`
`environment_managed_domain_missing`
`target_branch_missing`
`preview_environment_missing`
`preview_branch_deployment_missing`
`preview_branch_deployment_not_ready`
`preview_branch_deployment_unhealthy`
`preview_branch_domain_missing`
`preview_runtime_not_ready`
`runtime_host_unapproved`
`registered_project_service_identity_invalid`
`unexpected_resolution_error`