How To Fix WD201 - Installation error: Node type '&' not configured

SAP Error Message - Details

• Message type: E = Error

• Message class: WD - Workflow definition

• Message number: 201

• Message text: Installation error: Node type '&' not configured

What causes this issue?

The Workflow Builder tried to create a node of type '&V1&'. This node
type is not configured in the system tables TETYP and TETYT.

System Response

The node cannot be created.

How to fix this error?

Maintain tables TETYP and TETYT or carry out a supplementary transport
from the original system.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WD201 - Installation error: Node type '&' not configured ?

  SAP Error Message:
  
  WD201 Installation error: Node type '&' not configured
  
  Cause
  This error typically occurs during the installation or configuration of Web Dynpro components in SAP. The message indicates that a node type represented by '&' (which is a placeholder in the error message for the actual node type) is not configured in the Web Dynpro component or application metadata.
  In other words, the Web Dynpro runtime is trying to instantiate or access a node type that has not been properly defined or registered in the component's metadata repository. This can happen due to:
  
  Missing or incomplete component configuration.
  Corrupted or incomplete Web Dynpro component installation.
  Inconsistent or outdated metadata cache.
  Errors in the component's configuration XML files.
  Transport or system copy issues where the component metadata was not properly imported.
  
  
  Solution
  
  
  Check the Actual Node Type:
  
  The error message shows & as a placeholder. Look into the detailed logs or trace files to find the actual node type name causing the problem.
  
  
  
  Verify Component Configuration:
  
  Use transaction SE80 or SE84 to check the Web Dynpro component.
  Ensure that the node type mentioned is defined in the component's context or metadata.
  Check the component's configuration XML files for completeness and correctness.
  
  
  
  Re-import or Reinstall the Component:
  
  If the component is corrupted or incomplete, try re-importing the transport or reinstalling the Web Dynpro component.
  Use transaction SPAM/SAINT if applicable, or re-import the relevant transport requests.
  
  
  
  Clear Metadata Cache:
  
  Sometimes, the metadata cache is outdated or corrupted.
  Use transaction /n/IWFND/CACHE_CLEANUP (for SAP Gateway) or restart the SAP Web Dynpro services to clear caches.
  Alternatively, restart the SAP application server to refresh the metadata.
  
  
  
  Check for OSS Notes:
  
  Search SAP Support Portal for OSS Notes related to this error.
  There might be patches or corrections available for your SAP version.
  
  
  
  Check System Copy or Transport Logs:
  
  If this error appeared after a system copy or transport, verify that all Web Dynpro components and their metadata were correctly imported.
  
  
  
  Debugging:
  
  If you have development access, debug the Web Dynpro application startup to see where the node type is being accessed and why it is missing.
  
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  SE80 - Object Navigator (to check Web Dynpro components)
  SE84 - Repository Information System
  /IWFND/CACHE_CLEANUP - SAP Gateway Cache Cleanup
  SPAM/SAINT - Support Package Manager / Add-On Installation Tool
  
  
  
  SAP Notes:
  
  Search for notes with keywords like "WD201", "Node type not configured", "Web Dynpro installation error".
  Example note numbers might vary depending on SAP version.
  
  
  
  Web Dynpro Concepts:
  
  Node types are part of the context structure in Web Dynpro components.
  Proper definition and registration of node types are essential for component runtime.
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Missing or unconfigured node type in Web Dynpro component metadata during installation.
  
  
  Solution
  Verify node type definition, re-import component, clear metadata cache, check transports.
  
  
  Related
  Use SE80, clear cache, check OSS notes, debug Web Dynpro component.
  
  
  
  
  If you provide the exact node type name or more context (e.g., when the error occurs), I can help with more specific guidance.