{"record":{"id":"66b5991ba3446c45","repo":"apache/dolphinscheduler","slug":"can-not-find-valid-workflow-by-name-s","errorCode":null,"errorMessage":"Can not find valid workflow by name %s","messagePattern":"Can not find valid workflow by name (.+?)","errorType":"exception","errorClass":"IllegalArgumentException","httpStatus":null,"severity":"error","filePath":"dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/python/PythonGateway.java","lineNumber":538,"sourceCode":"    public Map<String, Object> getWorkflowInfo(String userName, String projectName,\n                                               String workflowName) {\n        Map<String, Object> result = new HashMap<>();\n\n        User user = usersService.queryUser(userName);\n        Project project = projectService.queryByName(user, projectName);\n        long projectCode = project.getCode();\n        WorkflowDefinition workflowDefinition = getWorkflow(user, projectCode, workflowName);\n        // get workflow info\n        if (workflowDefinition != null) {\n            // make sure workflow online\n            workflowDefinitionService.onlineWorkflowDefinition(user, projectCode, workflowDefinition.getCode());\n            result.put(\"id\", workflowDefinition.getId());\n            result.put(\"name\", workflowDefinition.getName());\n            result.put(\"code\", workflowDefinition.getCode());\n        } else {\n            String msg = String.format(\"Can not find valid workflow by name %s\", workflowName);\n            log.error(msg);\n            throw new IllegalArgumentException(msg);\n        }\n\n        return result;\n    }\n\n    /**\n     * Get project, workflow, task code.\n     * Useful in Python API create dependent task which need workflow information.\n     *\n     * @param projectName  project name which workflow belongs to\n     * @param workflowName workflow name\n     * @param taskName     task name\n     */\n    public Map<String, Object> getDependentInfo(String projectName, String workflowName, String taskName) {\n        Map<String, Object> result = new HashMap<>();\n\n        Project project = projectDao.queryByName(projectName);\n        if (project == null) {","sourceCodeStart":520,"sourceCodeEnd":556,"githubUrl":"https://github.com/apache/dolphinscheduler/blob/02eac45a1b6676e639fcbfb4be2243de5771b05d/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/python/PythonGateway.java#L520-L556","documentation":"getWorkflowInfo resolves a workflow definition by name; when the lookup returns null it throws IllegalArgumentException. The Python gateway needs the workflow's id/name/code to attach tasks, so a missing workflow blocks workflow generation.","triggerScenarios":"Calling getWorkflowInfo(workflowName) for a workflow name that does not exist (the query itself throws or returns null before this branch when the workflow is absent).","commonSituations":"Python script referencing a workflow defined in another project/environment; workflow renamed or deleted; project code mismatch so lookup happens in wrong project; typo in workflow name.","solutions":["Confirm the workflow exists in the target project via the web UI and match the name exactly","Create the workflow or fix the name in the Python script","Ensure the project/workflow name pair is correct — names are scoped per project","Re-run after syncing definitions between environments"],"exampleFix":"// before (Python)\nworkflow = Workflow(name=\"etl_daily\", project=project)\n# getWorkflowInfo(\"etl-daily\") fails\n// after\nworkflow = Workflow(name=\"etl-daily\", project=project)  # matches existing workflow","handlingStrategy":"try-catch","validationCode":"// caller-side (Python): confirm the workflow exists before lookup\nif workflow_name not in project.list_workflows():\n    raise ValueError(f\"Workflow {workflow_name} does not exist in project\")","typeGuard":null,"tryCatchPattern":"try {\n    Map<String, Object> info = pythonGateway.getWorkflowInfo(workflowName);\n} catch (IllegalArgumentException e) {\n    log.error(\"Workflow not found: {}\", e.getMessage());\n}","preventionTips":["Reference workflows by their exact name in the target project","Create workflows before scripts that depend on them","Avoid renaming workflows used by pydolphinscheduler automation"],"tags":["python-api","workflow","not-found"],"backgroundTag":"entity-not-found","analyzedSha":"02eac45a1b6676e639fcbfb4be2243de5771b05d","analyzedAt":"2026-09-06T17:43:00.555Z","contentChangedAt":"2026-09-06T17:43:00.555Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}