How To Fix MC109 - Internal error reading the root table (look at syslog)

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 109

• Message text: Internal error reading the root table (look at syslog)

What causes this issue?

An error occurred in the database interface when reading the
records of the root table. Please consult the SAP system log
for more information about this error.
If this is not the case or if you cannot correct the error, please call
the SAP hotline.

System Response

Maintenance is cancelled.

How to fix this error?

If you found the error in the SAP system log, please
correct the error. Then try again to create the matchcode records.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC109 - Internal error reading the root table (look at syslog) ?

  The SAP error message MC109, which states "Internal error reading the root table (look at syslog)," typically indicates an issue with the data retrieval process in the SAP system, particularly related to the Material Management (MM) or Logistics Information System (LIS) modules. This error can arise due to various reasons, including database inconsistencies, issues with the data model, or problems with the underlying database.
  Causes:
  
  Database Issues: Corruption or inconsistencies in the database tables that are being accessed.
  Authorization Problems: Insufficient permissions to access certain tables or data.
  Configuration Errors: Incorrect settings in the configuration of the LIS or related modules.
  System Bugs: Known bugs in the SAP version you are using that may cause this error.
  Transport Issues: Problems with transport requests that may have affected the data model or configuration.
  
  Solutions:
  
  Check the Syslog: The error message suggests looking at the syslog for more detailed information. Use transaction code SM21 to view the system log and identify any related errors or warnings.
  Database Consistency Check: Run a consistency check on the database tables involved. You can use transaction SE14 to check and repair database tables.
  Authorization Check: Ensure that the user has the necessary authorizations to access the required tables and data.
  Rebuild the Data Model: If the error is related to the LIS, consider rebuilding the data model. This can be done using transaction LBW0 for LIS or MCB1 for the InfoStructure.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that address this specific error. There may be patches or updates available that resolve the issue.
  System Restart: In some cases, a system restart may help clear temporary issues that could be causing the error.
  Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM21 (System Log), SE14 (Database Utility), LBW0 (LIS Data Model), and MCB1 (InfoStructure).
  SAP Notes: Regularly check for updates and patches in the SAP Support Portal, as SAP frequently releases notes that address known issues.
  Documentation: Review SAP documentation related to the specific module you are working with (e.g., MM, LIS) for best practices and troubleshooting steps.
  
  By following these steps, you should be able to diagnose and potentially resolve the MC109 error in your SAP system.