How To Fix SWDP_WB_TOOL018 - Use of type pools is not supported in Web Dynpro

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 018

• Message text: Use of type pools is not supported in Web Dynpro

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SWDP_WB_TOOL018 - Use of type pools is not supported in Web Dynpro ?

  The SAP error message SWDP_WB_TOOL018 indicates that the use of type pools is not supported in Web Dynpro applications. This error typically arises when you attempt to use a type pool in a Web Dynpro context, which is not allowed due to the architecture and design principles of Web Dynpro.
  Cause:
  The primary cause of this error is the attempt to use a type pool in a Web Dynpro component or application. Type pools are a way to define global types and constants in ABAP, but Web Dynpro has its own mechanisms for handling data types and structures, which do not include type pools.
  Solution:
  To resolve this error, you should follow these steps:
  
  
  Remove Type Pool Usage: Identify where the type pool is being used in your Web Dynpro application and remove any references to it. This includes any data declarations or type definitions that rely on the type pool.
  
  
  Use Local Types: Instead of using a type pool, define your types locally within the Web Dynpro component. You can do this by:
  
  Creating a structure or table type directly in the Web Dynpro context.
  Using the ABAP Dictionary to define data elements or structures that can be used within the Web Dynpro application.
  
  
  
  Check for Global Types: If you need to use global types, consider defining them in the ABAP Dictionary (using Data Elements or Structures) instead of using type pools. This way, you can still maintain a level of reusability without violating Web Dynpro constraints.
  
  
  Review Documentation: Consult the SAP documentation for Web Dynpro to understand the best practices for data handling and type definitions. This will help you design your application in a way that adheres to the framework's guidelines.
  
  
  Related Information:
  
  Web Dynpro Architecture: Understanding the architecture of Web Dynpro can help you design your applications more effectively. Web Dynpro uses a component-based model where data is typically managed through context nodes and attributes.
  ABAP Dictionary: Familiarize yourself with the ABAP Dictionary, as it provides a robust way to define and manage data types that can be used across different applications, including Web Dynpro.
  SAP Notes and Community: Check SAP Notes for any updates or specific guidance related to this error. The SAP Community forums can also be a valuable resource for troubleshooting and finding solutions shared by other developers.
  
  By following these steps and understanding the underlying principles of Web Dynpro, you should be able to resolve the SWDP_WB_TOOL018 error effectively.