How To Fix RSDD_ZA120 - Check for round-robin problems in indexes

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDD_ZA - Messages from TREX Aggregate Area

• Message number: 120

• Message text: Check for round-robin problems in indexes

What causes this issue?

Some of the preprocessors have round-robin problems.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSDD_ZA120 - Check for round-robin problems in indexes ?

  The SAP error message RSDD_ZA120, which indicates a check for round-robin problems in indexes, typically arises in the context of SAP BW (Business Warehouse) or SAP BW/4HANA when there are issues related to the distribution of data across multiple index partitions. This can lead to performance issues or data inconsistencies.
  Cause:
  
  
  Data Distribution Issues: The error often occurs when the data is not evenly distributed across the index partitions. This can happen due to various reasons, such as:
  
  Changes in the data model or data load process.
  Inconsistent data loads that lead to uneven partition sizes.
  Incorrect settings in the InfoProvider or data source.
  
  
  
  Index Corruption: Sometimes, the indexes themselves may become corrupted or not properly updated, leading to inconsistencies.
  
  
  Configuration Issues: Misconfigurations in the settings for the InfoCube or DataStore Object (DSO) can also lead to this error.
  
  
  Solution:
  
  
  Check Data Distribution: 
  
  Use transaction code RSA1 to access the Data Warehousing Workbench.
  Navigate to the InfoProvider and check the data distribution across the partitions.
  If you find that the data is not evenly distributed, consider reloading the data or adjusting the load process.
  
  
  
  Rebuild Indexes: 
  
  You can rebuild the indexes for the affected InfoProvider. This can often resolve issues related to index corruption.
  Use transaction code RSD1 to access the InfoProvider and then choose the option to rebuild the index.
  
  
  
  Check Load Processes: 
  
  Review the data load processes to ensure they are configured correctly and that they are not causing uneven data distribution.
  Ensure that the data load is being executed in a way that maintains balance across partitions.
  
  
  
  Monitor and Adjust Settings: 
  
  Check the settings for the InfoCube or DSO to ensure they are optimized for your data model.
  Adjust the settings if necessary to improve data distribution.
  
  
  
  Use SAP Notes: 
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Consult Documentation: 
  
  Review the SAP BW documentation for best practices on managing indexes and data distribution.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), RSD1 (InfoProvider Maintenance), and RSCUSTV10 (Customizing for BW).
  Performance Monitoring: Regularly monitor the performance of your BW system to catch potential issues early.
  SAP Community: Engage with the SAP Community 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 beneficial to engage SAP support for further assistance.