How To Fix SWDP_WB_TOOL228 - The recursion node cannot be an attribute

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 228

• Message text: The recursion node cannot be an attribute

What causes this issue?

You are processing a recursion node to which, so far, no recurrence node
has been assigned. Or you wish to change the assignment and assign an
attribute.

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?

A recursion node is only defined in valid form if it has the node that
is to be recurrent assigned to it. This node must be on the path of the
root node to the recursion node - that is, either directly or indirectly
predecessor. Therefore, an attribute cannot be used as a recurrence
node.

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_TOOL228 - The recursion node cannot be an attribute ?

  The SAP error message SWDP_WB_TOOL228, which states "The recursion node cannot be an attribute," typically occurs in the context of SAP Web Dynpro development when you are trying to define a recursive relationship in a data model or component that is not allowed.
  Cause:
  This error arises when you attempt to define a node in a Web Dynpro component that references itself as an attribute. In other words, you are trying to create a recursive structure where a node is defined in such a way that it points back to itself, which is not permitted in the context of Web Dynpro.
  Solution:
  To resolve this error, you should:
  
  
  Review the Data Model: Check the structure of your data model. Ensure that you are not trying to define a node that references itself directly as an attribute.
  
  
  Use a Different Structure: If you need to represent a hierarchical or recursive relationship, consider using a different approach. For example, you can create a separate node that represents the parent-child relationship without directly referencing the same node.
  
  
  Adjust Node Definitions: If you have mistakenly set an attribute to point to the same node, change the attribute definition to point to a different node or structure that does not create a recursion.
  
  
  Consult Documentation: Refer to the SAP documentation for Web Dynpro to understand the limitations and best practices for defining nodes and attributes.
  
  
  Testing: After making the necessary changes, test your Web Dynpro application to ensure that the error is resolved and that the application behaves as expected.
  
  
  Related Information:
  
  Web Dynpro Documentation: SAP provides extensive documentation on Web Dynpro development, which includes guidelines on data modeling and node definitions.
  SAP Community: Engaging with the SAP Community can provide insights from other developers who may have encountered similar issues.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  
  By following these steps, you should be able to resolve the SWDP_WB_TOOL228 error and successfully define your Web Dynpro component without recursion issues.