How To Fix EC064 - The assigned F keys cannot be in the application toolbar (Style Guide)

SAP Error Message - Details

• Message type: E = Error

• Message class: EC - Development environment: Menu Painter

• Message number: 064

• Message text: The assigned F keys cannot be in the application toolbar (Style Guide)

What causes this issue?

You cannot display possible entries because only functions assigned to
a function key can be used in the application toolbar. Moreover, there
are standards which forbid the use of certain functions.

System Response

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

How to fix this error?

Extend the function key setting to include the functions desired in the
application toolbar.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EC064 - The assigned F keys cannot be in the application toolbar (Style Guide) ?

  The SAP error message EC064, which states "The assigned F keys cannot be in the application toolbar (Style Guide)," typically occurs when there is a conflict between the function keys (F keys) assigned to a particular transaction or application and the standard SAP GUI layout or style guide.
  Cause:
  
  F Key Assignment Conflict: The error arises when function keys (F1, F2, etc.) are assigned to actions that are already represented in the application toolbar. According to SAP's style guide, function keys should not be duplicated in the application toolbar.
  Customization Issues: If there have been customizations made to the SAP GUI or the specific transaction, it may lead to this conflict.
  Incorrect Configuration: The configuration of the transaction or the screen may not adhere to the guidelines set by SAP for the use of function keys.
  
  Solution:
  
  Review Function Key Assignments: Check the assignments of the function keys in the transaction or application. Ensure that no function key is assigned to an action that is already available in the application toolbar.
  Modify Customizations: If there are customizations that have led to this conflict, consider modifying or removing those customizations to align with the standard SAP guidelines.
  Use Alternative Keys: If certain function keys are causing the issue, consider using alternative keys or combinations that do not conflict with the application toolbar.
  Consult SAP Documentation: Refer to the SAP documentation or style guide for specific guidelines on function key assignments and application toolbar usage.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance.
  
  Related Information:
  
  SAP GUI Style Guide: Familiarize yourself with the SAP GUI style guide, which provides best practices for user interface design, including the use of function keys and application toolbars.
  Transaction Codes: If you are working with specific transaction codes, check if there are known issues or updates related to those transactions.
  User Exits and BAdIs: If you are using user exits or Business Add-Ins (BAdIs) that modify the behavior of the application, review them to ensure they are not causing the conflict.
  
  By following these steps, you should be able to resolve the EC064 error and ensure that your SAP application adheres to the style guide requirements.