How To Fix MMRP01156 - Internal error: error when reading the status matrix &1

SAP Error Message - Details

• Message type: E = Error

• Message class: MMRP01 - Rapid Planning Matrix

• Message number: 156

• Message text: Internal error: error when reading the status matrix &1

What causes this issue?

An error occurred during the reading of the status matrix &V1& from the
liveCache
.

System Response

The systerm terminates the processing.

How to fix this error?

Contact SAP.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MMRP01156 - Internal error: error when reading the status matrix &1 ?

  The SAP error message MMRP01156, which states "Internal error: error when reading the status matrix &1," typically indicates an issue related to the status matrix in the Material Management (MM) module, particularly in the context of material requirements planning (MRP) or inventory management.
  Cause:
  
  Data Corruption: The status matrix may be corrupted or not properly maintained, leading to issues when the system attempts to read it.
  Configuration Issues: Incorrect configuration settings in the material master or MRP settings can lead to this error.
  Authorization Issues: Lack of proper authorizations to access certain data or tables related to the status matrix.
  System Bugs: There may be bugs in the SAP system or specific patches that need to be applied.
  
  Solution:
  
  Check Data Integrity: Use transaction codes like SE11 or SE16 to check the relevant tables for any inconsistencies or corruption.
  Rebuild Status Matrix: If the status matrix is corrupted, you may need to rebuild it. This can often be done through specific transactions or programs provided by SAP.
  Review Configuration: Ensure that the configuration settings for MRP and material master data are correct. This includes checking the MRP type, lot size, and other relevant parameters.
  Check Authorizations: Ensure that the user encountering the error has the necessary authorizations to access the relevant data.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that address this specific error. There may be patches or updates that resolve the issue.
  System Logs: Review system logs (transaction SLG1) for any additional error messages or warnings that could provide more context about the issue.
  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 MM03 (Display Material), MD04 (Stock/Requirements List), and SE11 (Data Dictionary) 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 MRP and material management for best practices and troubleshooting steps.
  
  By following these steps, you should be able to diagnose and potentially resolve the MMRP01156 error in your SAP system.