How To Fix /PLMI/PPEENG099 - Unexpected error in back end engine (&1 &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: /PLMI/PPEENG -

• Message number: 099

• Message text: Unexpected error in back end engine (&1 &2)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PLMI/PPEENG099 - Unexpected error in back end engine (&1 &2) ?

  The SAP error message /PLMI/PPEENG099 Unexpected error in back end engine (&1 &2) typically indicates that there is an unexpected issue occurring in the backend processing of a specific application or module, often related to the Production Planning and Execution (PP/PE) area. The placeholders &1 and &2 usually represent specific error codes or messages that can provide more context about the nature of the error.
  Possible Causes:
  
  Configuration Issues: Incorrect or incomplete configuration settings in the relevant modules can lead to unexpected errors.
  Data Issues: Inconsistent or corrupted data in the database can trigger errors during processing.
  System Performance: High load on the system or performance issues can cause timeouts or unexpected behavior.
  Custom Code: If there are custom enhancements or modifications in the system, they might not be handling certain scenarios correctly.
  Backend System Issues: Problems in the backend system (like database issues or connectivity problems) can also lead to this error.
  
  Solutions:
  
  Check Error Details: Look at the specific error codes or messages represented by &1 and &2 to get more context. This can often be found in the SAP application log (transaction SLG1) or in the short dump analysis (transaction ST22).
  Review Configuration: Ensure that all relevant configurations in the PP/PE module are correctly set up. This includes checking master data, settings in the configuration tables, and any related parameters.
  Data Consistency Check: Run consistency checks on the relevant data. This can include checking for missing or incorrect entries in master data or transactional data.
  Performance Monitoring: Monitor system performance and check for any bottlenecks. Use transaction ST03N to analyze workload and performance metrics.
  Debugging: If you have access to the development environment, consider debugging the process to identify where the error is occurring.
  Consult SAP Notes: Search the SAP Support Portal for any relevant SAP Notes that might address this specific error. There may be patches or updates available that resolve known issues.
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support with the details of the error, including the context in which it occurs and any relevant logs.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SLG1 (Application Log), ST22 (Dump Analysis), and ST03N (Workload Analysis) for troubleshooting.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  Documentation: Review SAP documentation related to the specific module or functionality you are working with to ensure compliance with best practices.
  
  By following these steps, you should be able to diagnose and potentially resolve the error message /PLMI/PPEENG099.