How To Fix SV661 - Internal function library error

SAP Error Message - Details

• Message type: E = Error

• Message class: SV - View Maintenance: Customize Messages

• Message number: 661

• Message text: Internal function library error

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 SV661 - Internal function library error ?

  The SAP error message SV661, which indicates an "Internal function library error," typically arises from issues related to the SAP system's internal processing or configuration. Here are some potential causes, solutions, and related information for this error:
  Causes:
  
  Corrupted Function Modules: The function modules or libraries that the system relies on may be corrupted or not properly configured.
  System Configuration Issues: Incorrect settings in the SAP system configuration can lead to this error.
  Transport Issues: If recent transports were made, they might have introduced inconsistencies or errors in the system.
  Version Compatibility: There may be compatibility issues between different components of the SAP system or with third-party add-ons.
  Memory Issues: Insufficient memory or resources allocated to the SAP system can also trigger this error.
  
  Solutions:
  
  Check System Logs: Review the system logs (transaction SM21) for any related error messages that could provide more context about the issue.
  Function Module Check: Use transaction SE37 to check the relevant function modules for any inconsistencies or errors. You can also try to activate or re-activate the function modules.
  Transport Management: If the error occurred after a transport, check the transport logs for any errors and consider rolling back the transport if necessary.
  System Configuration Review: Review the configuration settings in transaction SPRO to ensure everything is set up correctly.
  Memory Allocation: Check the memory settings of the SAP instance and adjust them if necessary. This can be done in the instance profile.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. SAP frequently releases notes that provide fixes or workarounds for known issues.
  System Restart: In some cases, a simple restart of the SAP application server may resolve temporary issues.
  
  Related Information:
  
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. They can provide more detailed diagnostics and solutions based on your specific system configuration.
  Community Forums: Check SAP Community forums or other online resources where other users may have encountered and resolved similar issues.
  Documentation: Review the official SAP documentation for any updates or changes related to the function libraries and internal processing.
  
  Conclusion:
  The SV661 error can be complex, and its resolution may require a combination of the above steps. Always ensure that you have proper backups and a rollback plan before making significant changes to the system.