How To Fix 5P391 - E: Only return nodes and program call-up nodes are permitted here

SAP Error Message - Details

• Message type: E = Error

• Message class: 5P - Error Messages for Schema, Pers.Calc.Rule and Feature Checks

• Message number: 391

• Message text: E: Only return nodes and program call-up nodes are permitted here

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 5P391 - E: Only return nodes and program call-up nodes are permitted here ?

  The SAP error message 5P391 E: Only return nodes and program call-up nodes are permitted here typically occurs in the context of SAP ABAP programming, particularly when working with the Business Process Management (BPM) or Business Workflow components. This error indicates that there is an issue with the structure of the workflow or the way nodes are defined in the process.
  Cause:
  The error is caused by the presence of an invalid node type in a workflow or process definition. Specifically, it suggests that the system has encountered a node that is not allowed in the current context. In SAP BPM, nodes can be categorized into different types, such as:
  
  Return Nodes: These are used to return control to the calling process.
  Program Call-Up Nodes: These are used to call external programs or functions.
  
  If you attempt to use a node type that is not a return node or a program call-up node in a context where only these types are permitted, the system will raise this error.
  Solution:
  To resolve this error, you should:
  
  
  Review the Workflow Definition: Check the workflow or process definition where the error occurred. Ensure that you are only using return nodes and program call-up nodes in the appropriate places.
  
  
  Correct Node Types: If you find any nodes that are not of the allowed types, replace them with valid nodes. For example, if you have a decision node or a task node in a place where only return or program call-up nodes are allowed, you will need to remove or replace it.
  
  
  Validate the Process: After making changes, validate the workflow or process definition to ensure that it complies with the required structure.
  
  
  Test the Workflow: Once the changes are made, test the workflow to ensure that it functions as expected without triggering the error.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for BPM and workflow management for detailed information on node types and their usage.
  SAP Community: Engage with the SAP Community forums to seek advice from other developers who may have encountered similar issues.
  Debugging Tools: Utilize SAP debugging tools to trace the execution of the workflow and identify where the error is being triggered.
  
  By following these steps, you should be able to resolve the error and ensure that your workflow or process definition is correctly structured.