How To Fix 0D399 - Function (ACODE &1) is not defined

SAP Error Message - Details

• Message type: E = Error

• Message class: 0D - FS-CD General Messages

• Message number: 399

• Message text: Function (ACODE &1) is not defined

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message 0D399 - Function (ACODE &1) is not defined ?

  The SAP error message "0D399 Function (ACODE &1) is not defined" typically indicates that the system is trying to call a function or a method that has not been defined or is not available in the current context. This can occur in various scenarios, such as when working with custom developments, enhancements, or specific transactions.
  Causes:
  
  Missing Function Module: The function module or method being called does not exist in the system.
  Incorrect Function Code: The function code (ACODE) being referenced is incorrect or misspelled.
  Authorization Issues: The user may not have the necessary authorizations to access the function.
  Transport Issues: If the function was recently transported from another system, it may not have been properly imported or activated.
  Configuration Issues: The function may depend on certain configuration settings that are not properly set up.
  
  Solutions:
  
  Check Function Module: Verify that the function module or method exists in the system. You can do this by using transaction SE37 (Function Builder) or SE80 (Object Navigator).
  Correct Function Code: Ensure that the function code being used is correct and matches the expected input.
  Authorization Check: Check if the user has the necessary authorizations to execute the function. You can use transaction SU53 to analyze authorization issues.
  Transport Validation: If the function was recently transported, check the transport logs to ensure it was imported correctly. You may need to re-import or activate the transport.
  Configuration Review: Review any related configuration settings that may affect the availability of the function. This may involve checking customizing settings in SPRO or related transactions.
  Debugging: If you have access to debugging tools, you can set breakpoints to see where the error occurs and gather more context about the issue.
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  Community Forums: SAP Community and other forums can be helpful for finding similar issues faced by other users and their solutions.
  Documentation: Review the documentation for the specific module or functionality you are working with to ensure that all prerequisites are met.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or development team for further assistance.