How To Fix WD470 - Number of parallel branches less than number of required branches

SAP Error Message - Details

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 470

• Message text: Number of parallel branches less than number of required branches

What causes this issue?

You have selected a smaller number of possible parallel sections than
the number necessary.

System Response

The workflow cannot be activated.

How to fix this error?

Always choose a larger possible number or the same as the necessary
number.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WD470 - Number of parallel branches less than number of required branches ?

  The SAP error message WD470: Number of parallel branches less than number of required branches typically occurs in the context of SAP Web Dynpro applications, specifically when dealing with parallel processing in the component controller or component usage.
  
  Cause
  This error arises when the number of parallel branches defined in a Web Dynpro component or component usage is less than the number of branches required by the application logic or configuration.
  
  In Web Dynpro, you can define parallel branches to allow multiple instances of a component or view to run in parallel.
  The application or configuration expects a certain number of parallel branches (instances) to be available.
  If the actual number of parallel branches configured is less than the required number, the runtime throws the WD470 error.
  
  This often happens when:
  
  The maximum number of parallel branches is set too low in the component usage properties.
  The application logic tries to create or access more parallel branches than allowed.
  There is a mismatch between the expected and configured parallelism in the component controller or usage.
  
  
  Solution
  To resolve the WD470 error, you need to ensure that the number of parallel branches configured matches or exceeds the number required by the application.
  Steps:
  
  
  Check the Component Usage Properties:
  
  Open the Web Dynpro component in the SAP Web Dynpro Explorer.
  Navigate to the Component Usage node where the parallel branches are defined.
  Check the property "Maximum Number of Parallel Branches".
  Increase this number to at least the number of parallel branches required by your application.
  
  
  
  Review Application Logic:
  
  Verify how many parallel branches your application logic tries to create or access.
  Adjust the logic if it tries to create more branches than necessary or allowed.
  
  
  
  Adjust Component Controller Settings:
  
  If the parallel branches are defined at the component controller level, ensure the settings allow the required number of parallel instances.
  
  
  
  Re-deploy and Test:
  
  After adjusting the settings, re-deploy the application and test to confirm the error is resolved.
  
  
  
  
  Related Information
  
  SAP Note / Documentation: There might be SAP Notes related to this error depending on your SAP NetWeaver version.
  Web Dynpro Concepts:
  
  Parallel branches allow multiple instances of a component or view to be active simultaneously.
  Useful for scenarios like tabbed UIs or multiple dialogs.
  
  
  Error Context:
  
  This error is specific to Web Dynpro ABAP applications.
  It is a runtime error indicating a configuration mismatch.
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error Message
  WD470: Number of parallel branches less than number of required branches
  
  
  Cause
  Configured max parallel branches < required number of parallel branches
  
  
  Solution
  Increase "Maximum Number of Parallel Branches" in component usage properties
  
  
  Where to Check
  Web Dynpro Component Usage ? Properties ? Maximum Number of Parallel Branches
  
  
  Related Concepts
  Web Dynpro parallel branches, component controller, component usage
  
  
  
  
  If you need further assistance, please provide details about the Web Dynpro component, the number of parallel branches configured, and the scenario where the error occurs.