How To Fix ED055 - Internal error in navigation: Function module name is missing

SAP Error Message - Details

• Message type: E = Error

• Message class: ED - ABAP/4 Editor messages

• Message number: 055

• Message text: Internal error in navigation: Function module name is missing

What causes this issue?

The function module name has been lost by an internal navigation error.
The desired function can therefore not be carried out.

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

System Response

How to fix this error?

Pleas report the error, specifying the navigation steps performed.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ED055 - Internal error in navigation: Function module name is missing ?

  The SAP error message ED055, which states "Internal error in navigation: Function module name is missing," typically occurs in the context of SAP's navigation framework, particularly when there is an issue with the configuration or setup of a navigation-related function module.
  Cause:
  
  Missing Function Module: The error indicates that a required function module name is not specified or is missing in the navigation configuration.
  Configuration Issues: There may be issues in the configuration of the navigation settings in the SAP system, such as missing entries in the relevant tables or incorrect settings.
  Transport Issues: If the system has recently undergone a transport of changes, it is possible that some objects were not transported correctly, leading to missing function modules.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access certain function modules, leading to this error.
  
  Solution:
  
  
  Check Configuration: 
  
  Go to the relevant transaction (e.g., SE80 or SE11) and check the navigation settings for the application or area where the error occurs.
  Ensure that all required function modules are correctly defined and that their names are specified.
  
  
  
  Verify Function Module Existence:
  
  Use transaction SE37 to check if the function module that is supposed to be called exists in the system.
  If it does not exist, you may need to create it or transport it from another system.
  
  
  
  Review Transport Requests:
  
  If the issue arose after a transport, check the transport logs to ensure that all necessary objects were included and transported correctly.
  
  
  
  Check Authorizations:
  
  Ensure that the user encountering the error has the necessary authorizations to execute the function module. You can check this using transaction SU53 or by reviewing the user's roles and authorizations.
  
  
  
  Debugging:
  
  If the above steps do not resolve the issue, consider debugging the application to trace where the navigation is failing. This may provide insights into what is missing or misconfigured.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates that resolve known issues related to this error message.
  
  
  
  Related Information:
  
  SAP Documentation: Review the official SAP documentation for navigation and function modules to understand how they are supposed to work together.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  System Logs: Check the system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to identify the root cause of the ED055 error and implement a solution to resolve it.