How To Fix FL421 - Dialog modules are no longer supported

SAP Error Message - Details

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 421

• Message text: Dialog modules are no longer supported

What causes this issue?

Dialog modules are an obsolete form of technology that is no longer
supported.
Instead, use transaction SE37 to create function modules.

System Response

The creation of the dialog module is canceled.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FL421 - Dialog modules are no longer supported ?

  The SAP error message FL421, which states "Dialog modules are no longer supported," typically indicates that the system is trying to execute a dialog module that is outdated or deprecated. This can occur in various scenarios, such as when using older custom programs or transactions that rely on dialog modules that SAP has phased out in favor of newer technologies.
  Cause:
  
  Outdated Code: The dialog module being called is part of an older codebase that has not been updated to comply with current SAP standards.
  Deprecated Functionality: SAP periodically deprecates certain functionalities and modules as part of its evolution and improvement of the system.
  Custom Development: If there are custom programs or enhancements that utilize dialog modules, they may not be compatible with the current version of SAP.
  
  Solution:
  
  Update Code: Review the code that is generating the error and update it to use supported function modules or methods. This may involve replacing the dialog module calls with newer alternatives.
  Check SAP Notes: Look for relevant SAP Notes that may provide guidance on how to resolve the issue. SAP Notes often contain information about deprecated features and recommended replacements.
  Consult Documentation: Refer to the latest SAP documentation for the version you are using to understand the current best practices and supported functionalities.
  Testing: After making changes, thoroughly test the updated code to ensure that it functions correctly and does not introduce new issues.
  Engage SAP Support: If you are unable to resolve the issue, consider reaching out to SAP Support for assistance. They can provide insights specific to your system configuration and version.
  
  Related Information:
  
  SAP Version: Ensure that you are aware of the specific version of SAP you are using, as the support for dialog modules may vary between versions.
  Custom Development Guidelines: If you have custom developments, ensure that they are regularly reviewed and updated to align with SAP's current standards.
  Training and Resources: Consider training for your development team on the latest SAP technologies and methodologies to prevent similar issues in the future.
  
  By addressing the underlying cause of the FL421 error and updating your code accordingly, you can resolve the issue and ensure compatibility with your SAP system.