How To Fix SWDP_WB_TOOL244 - Node &1: Cardinality &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: 244

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

What causes this issue?

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

System Response

Error message from the syntax analysis.

How to fix this error?

Assign a valid 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_TOOL244 - Node &1: Cardinality &2 is not allowed ?

  The SAP error message SWDP_WB_TOOL244 typically occurs in the context of SAP Web Dynpro development, particularly when dealing with the configuration of components and their relationships. The error message indicates that there is an issue with the cardinality of a node in a Web Dynpro component.
  Cause:
  The error message "Node &1: Cardinality &2 is not allowed" suggests that the cardinality defined for a particular node in your Web Dynpro component is not valid. Cardinality refers to the number of instances of a node that can exist in a particular context. The common cardinality settings are:
  
  0..1: Zero or one instance
  1..1: Exactly one instance
  0..n: Zero or more instances
  1..n: One or more instances
  
  The error typically arises when:
  
  The cardinality defined for a node does not match the expected cardinality based on the data model or the context in which it is being used.
  There is a mismatch between the cardinality defined in the data model and the cardinality expected by the Web Dynpro component.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Node Definition: Go to the Web Dynpro component in the SAP Web Dynpro Workbench and check the definition of the node that is causing the error. Ensure that the cardinality is set correctly according to your data model.
  
  
  Adjust Cardinality: If the cardinality is incorrect, adjust it to match the expected values. For example, if the data model allows for multiple instances but the node is set to 1..1, change it to 0..n or 1..n as appropriate.
  
  
  Review Context Mapping: Check the context mapping of the node in question. Ensure that the context node is correctly mapped to the data source and that the cardinality aligns with the data being retrieved.
  
  
  Rebuild the Component: After making changes, rebuild the Web Dynpro component to ensure that the changes take effect.
  
  
  Test the Application: Run the application to verify that the error has been resolved and that the node behaves as expected.
  
  
  Related Information:
  
  Web Dynpro Documentation: Refer to the official SAP documentation for Web Dynpro to understand the concepts of context nodes, cardinality, and data binding.
  SAP Community: Check the SAP Community forums for similar issues and solutions shared by other developers.
  Debugging Tools: Use debugging tools available in the SAP environment to trace the execution and identify where the cardinality issue arises.
  
  By following these steps, you should be able to resolve the SWDP_WB_TOOL244 error and ensure that your Web Dynpro application functions correctly.