How To Fix PPH_MRP121 - Number of aggregated MDPS read: &1 (MRP Live on HANA)

SAP Error Message - Details

• Message type: E = Error

• Message class: PPH_MRP -

• Message number: 121

• Message text: Number of aggregated MDPS read: &1 (MRP Live on HANA)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message PPH_MRP121 - Number of aggregated MDPS read: &1 (MRP Live on HANA) ?

  The SAP error message PPH_MRP121, which states "Number of aggregated MDPS read: &1," typically occurs in the context of Material Requirements Planning (MRP) when using the MRP Live functionality on HANA. This error is related to the aggregation of Material Data Processing Sessions (MDPS) during the MRP run.
  Cause:
  
  Data Volume: The error may arise due to a high volume of data being processed, which can lead to performance issues or timeouts.
  Configuration Issues: There may be configuration settings in the MRP Live that are not optimized for the current data set or business processes.
  Database Performance: If the HANA database is not performing optimally, it can lead to issues in reading and processing the aggregated MDPS.
  Locking Issues: There may be locks on the data that prevent the MRP process from accessing the necessary information.
  
  Solution:
  
  Check Data Volume: Analyze the amount of data being processed during the MRP run. If the volume is too high, consider breaking it down into smaller runs or optimizing the selection criteria.
  Optimize Configuration: Review the MRP Live configuration settings. Ensure that they are set up correctly for your business needs and that they are optimized for performance.
  Database Optimization: Monitor the performance of the HANA database. Check for any performance bottlenecks and optimize the database if necessary. This may include indexing, partitioning, or adjusting memory settings.
  Review Locks: Check for any locks on the relevant tables or data that could be causing the issue. Resolve any locking issues to allow the MRP process to access the necessary data.
  Increase Timeout Settings: If the process is timing out, consider increasing the timeout settings for the MRP run to allow more time for processing.
  SAP Notes and Support: Check for any relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  
  Related Information:
  
  MRP Live: MRP Live is a real-time MRP processing tool that leverages the capabilities of the HANA database for faster processing and analysis.
  SAP HANA: Understanding the architecture and performance tuning of SAP HANA can be beneficial in resolving issues related to data processing.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MD01N (MRP Live) and MD04 (Stock/Requirements List) to monitor and analyze MRP runs.
  SAP Community: Engage with the SAP Community forums for insights and shared experiences from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to engage SAP support for further assistance.