How To Fix SWDP_WB_TOOL230 - Node to be repeated is not a predecessor of the recursion node

SAP Error Message - Details

• Message type: E = Error

• Message class: SWDP_WB_TOOL - Web Dynpro: Messages for Workbench Tools

• Message number: 230

• Message text: Node to be repeated is not a predecessor of the recursion node

What causes this issue?

You want to assign a recurrence node to a recursion node.
This node must be on the path from the root node to the recursion node.
This means it must be its direct or indirect predecessor.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SWDP_WB_TOOL230 - Node to be repeated is not a predecessor of the recursion node ?

  The SAP error message SWDP_WB_TOOL230 indicates that there is an issue with the configuration of a Web Dynpro application, specifically related to the node structure in the context of a recursive node. This error typically arises when you are trying to set up a recursive relationship in a Web Dynpro component, but the node you are trying to repeat is not correctly defined as a predecessor of the recursion node.
  Cause:
  
  Incorrect Node Configuration: The node that you are trying to repeat is not properly set as a predecessor of the recursion node. In a recursive structure, the parent-child relationship must be correctly established.
  Modeling Errors: There may be errors in the way the data model is defined, such as incorrect associations or cardinalities.
  Hierarchy Issues: If you are working with hierarchical data, the hierarchy may not be correctly defined, leading to this error.
  
  Solution:
  
  
  Check Node Relationships:
  
  Open the Web Dynpro component in the Web Dynpro Workbench.
  Navigate to the data model and check the relationships between the nodes.
  Ensure that the node you want to repeat is correctly set as a predecessor of the recursion node.
  
  
  
  Adjust Node Properties:
  
  Verify the properties of the nodes involved in the recursion.
  Ensure that the cardinality and associations are correctly defined.
  
  
  
  Review Data Model:
  
  Review the entire data model for any inconsistencies or errors.
  Make sure that the data structure supports the intended recursive relationship.
  
  
  
  Test Changes:
  
  After making the necessary adjustments, test the application to see if the error persists.
  If the error is resolved, ensure that the application behaves as expected.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for guidance on setting up recursive nodes in Web Dynpro applications.
  
  
  
  Related Information:
  
  Web Dynpro Documentation: SAP provides extensive documentation on Web Dynpro, including best practices for modeling data and setting up nodes.
  SAP Community: Engaging with the SAP Community can provide insights from other developers who may have encountered similar issues.
  Debugging Tools: Utilize debugging tools within the SAP environment to trace the execution and identify where the configuration might be going wrong.
  
  By following these steps, you should be able to resolve the SWDP_WB_TOOL230 error and correctly configure your Web Dynpro application.