How To Fix SWDP_WB_TOOL246 - Node &1: Selection &2 is not allowed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 246

• Message text: Node &1: Selection &2 is not allowed

What causes this issue?

Allowed values for the selection cardinality are:
none, 1..1, 0..1, 1..n, 0..n.
These values have the internal codes 00, 01, 02, 03, and 04. Node &V1&,
however, has a selection cardinality with the internal code &V2&.

System Response

Error message of the syntax analysis.

How to fix this error?

Assign the node an allowed selection cardinality.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SWDP_WB_TOOL246 - Node &1: Selection &2 is not allowed ?

  The SAP error message SWDP_WB_TOOL246, which states "Node &1: Selection &2 is not allowed," typically occurs in the context of the SAP Web Dynpro development environment. This error indicates that there is an issue with the selection of nodes in the Web Dynpro component, often related to the data model or the configuration of the Web Dynpro application.
  Cause:
  
  Invalid Node Selection: The error usually arises when a node selection is attempted that is not permitted based on the current context or configuration. For example, trying to select a node that is not a child of the current node or is not part of the data model.
  Incorrect Binding: There may be issues with how the nodes are bound in the Web Dynpro component, leading to invalid selections.
  Hierarchy Issues: If the nodes are part of a hierarchical structure, the selection might violate the hierarchy rules.
  Data Model Changes: Changes in the underlying data model that are not reflected in the Web Dynpro component can also lead to this error.
  
  Solution:
  
  Check Node Configuration: Review the configuration of the nodes in the Web Dynpro component. Ensure that the nodes are correctly defined and that the selection paths are valid.
  Validate Bindings: Ensure that the bindings between the UI elements and the data model are correctly set up. Check for any inconsistencies in the binding paths.
  Review Hierarchical Structure: If the nodes are part of a hierarchy, ensure that the selection adheres to the hierarchy rules. You may need to adjust the selection logic to comply with the hierarchy.
  Debugging: Use the debugging tools in the SAP Web Dynpro environment to trace the execution and identify where the invalid selection is being made.
  Consult Documentation: Refer to the SAP documentation for Web Dynpro to understand the specific requirements and constraints related to node selections.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Web Dynpro Documentation: Review the official SAP documentation for Web Dynpro to understand the data model and node selection rules.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the context in which the error occurs.