How To Fix SWDP_WB_TOOL203 - Only one node can be mapped to node &1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 203

• Message text: Only one node can be mapped to node &1

What causes this issue?

You are trying to define mapping to a node &V1&. The original element
that is to be mapped to &V1& is not a node, but an attribute or a
recursion node.

System Response

The system rejects the mapping.

How to fix this error?

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

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_TOOL203 - Only one node can be mapped to node &1 ?

  The SAP error message SWDP_WB_TOOL203: Only one node can be mapped to node &1 typically occurs in the context of the SAP Web Dynpro development environment. This error indicates that there is an issue with the mapping of nodes in your Web Dynpro component, specifically that you are trying to map multiple nodes to a single node, which is not allowed.
  Cause:
  
  Incorrect Node Mapping: The error arises when you attempt to map more than one source node to a single target node in the context of data binding or model mapping.
  Model Configuration Issues: There may be a misconfiguration in the data model where the relationships between nodes are not properly defined.
  Duplicate Mappings: You might have inadvertently created duplicate mappings in your Web Dynpro component.
  
  Solution:
  
  Review Node Mappings: Go to the Web Dynpro component in the SAP Web Dynpro Workbench and check the mappings between the nodes. Ensure that each target node is only mapped to one source node.
  Adjust Data Model: If you have a complex data model, ensure that the relationships between nodes are correctly defined. You may need to adjust the structure of your data model to avoid conflicts.
  Remove Duplicate Mappings: If you find that there are duplicate mappings, remove the unnecessary ones to ensure that each target node has a unique source node.
  Check for Changes: If you have recently made changes to the data model or mappings, review those changes to identify any potential issues that may have led to this error.
  Rebuild the Component: Sometimes, rebuilding the Web Dynpro component can help resolve issues related to mappings. You can do this by activating the component again.
  
  Related Information:
  
  Web Dynpro Documentation: Refer to the official SAP documentation for Web Dynpro to understand the concepts of node mapping and data binding better.
  SAP Community: You can search for similar issues in the SAP Community forums, where other developers may have encountered and resolved the same error.
  Debugging Tools: Utilize debugging tools within the SAP environment to trace the execution and identify where the mapping issue occurs.
  
  By following these steps, you should be able to resolve the SWDP_WB_TOOL203 error and ensure that your Web Dynpro application functions correctly.