How To Fix RS406 - Function module does not exist (any longer)

SAP Error Message - Details

• Message type: E = Error

• Message class: RS - BRST Reporting Support Tools: Communication Handler

• Message number: 406

• Message text: Function module does not exist (any longer)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RS406 - Function module does not exist (any longer) ?

  The SAP error message RS406 ("Function module does not exist (any longer)") typically indicates that a function module that is being called in your ABAP program or report is no longer available in the system. This can happen for several reasons, such as:
  Causes:
  
  Function Module Deletion: The function module may have been deleted or deactivated in the system.
  Transport Issues: If the function module was part of a transport request that was not imported correctly, it may not exist in the target system.
  Namespace Issues: The function module might be in a different namespace or client, and thus not accessible in the current context.
  Version Changes: If you are working with a newer version of SAP, the function module may have been replaced or renamed in the latest release.
  Authorization Issues: Sometimes, the function module exists, but the user does not have the necessary authorizations to access it.
  
  Solutions:
  
  Check Existence: Use transaction SE37 (Function Builder) to check if the function module exists in the system. If it does not, you may need to recreate it or find an alternative.
  Transport Check: If the function module was part of a transport request, ensure that the transport has been successfully imported into the target system.
  Namespace Verification: Verify that you are using the correct namespace and that the function module is available in the current client.
  Code Review: Review the code to see if the function module has been replaced with a different one or if there is an updated version that should be used instead.
  Authorization Check: Ensure that the user has the necessary authorizations to access the function module. You can check this with transaction SU53 after the error occurs.
  Consult Documentation: If the function module is part of a standard SAP package, consult the SAP documentation or release notes for any changes related to that function module.
  
  Related Information:
  
  Transaction Codes: SE37 (Function Builder), SE80 (Object Navigator), SE11 (Data Dictionary), SU53 (Authorization Check).
  SAP Notes: Check SAP Notes for any known issues or updates related to the specific function module.
  Debugging: If you have access to debugging tools, you can set breakpoints to see where the function module is being called and gather more context about the error.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP Basis team or SAP support for further assistance.