How To Fix MMRP01015 - Matrix type is unknown (internal error)

SAP Error Message - Details

• Message type: E = Error

• Message class: MMRP01 - Rapid Planning Matrix

• Message number: 015

• Message text: Matrix type is unknown (internal error)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MMRP01015 - Matrix type is unknown (internal error) ?

  The SAP error message MMRP01015, which states "Matrix type is unknown (internal error)," typically occurs in the context of Material Management (MM) or Production Planning (PP) modules when there is an issue with the matrix type configuration in the system. This error can arise due to various reasons, including incorrect configuration settings, missing data, or inconsistencies in the master data.
  Causes:
  
  Missing or Incorrect Matrix Type Configuration: The matrix type that the system is trying to reference may not be defined in the configuration settings.
  Data Inconsistencies: There may be inconsistencies in the material master data or other related master data that reference the matrix type.
  Custom Development Issues: If there are custom programs or enhancements that interact with matrix types, they may not be handling certain scenarios correctly.
  Transport Issues: If the matrix type was recently transported from another system, it may not have been set up correctly in the target system.
  
  Solutions:
  
  
  Check Matrix Type Configuration:
  
  Go to the configuration settings in SAP (Transaction SPRO) and navigate to the relevant area for matrix types.
  Ensure that the matrix type in question is defined and correctly configured.
  
  
  
  Review Material Master Data:
  
  Check the material master records that are causing the error. Ensure that all required fields are filled out correctly and that the matrix type is correctly assigned.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can analyze the program or transaction that triggers the error to identify where the matrix type is being referenced and why it is not recognized.
  
  
  
  Check for Custom Code:
  
  If there are any custom developments or enhancements, review the code to ensure that it correctly handles matrix types and does not assume the existence of a specific matrix type without checking.
  
  
  
  Transport Management:
  
  If the issue arose after a transport, verify that all necessary objects related to the matrix type were included in the transport request and that they were imported correctly.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates that resolve known issues related to matrix types.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including transaction codes, steps to reproduce, and any relevant logs.
  
  
  
  Related Information:
  
  Transaction Codes: You may find it useful to familiarize yourself with transaction codes related to material master data (e.g., MM01, MM02, MM03) and configuration (e.g., SPRO).
  Documentation: Review SAP documentation related to matrix types and material management to understand the expected configurations and data structures.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the cause of the MMRP01015 error in your SAP system.