How To Fix MMRP01079 - Matrix type cannot be changed (internal error)

MMRP01079 - Overview

• Message type: E = Error

• Message class: MMRP01 - Rapid Planning Matrix

• Message number: 079

• Message text: Matrix type cannot be changed (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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MMRP01079 - Details

• The SAP error message MMRP01079, which states "Matrix type cannot be changed (internal error)," typically occurs in the context of material master data management, particularly when dealing with matrix materials. This error indicates that there is an issue with changing the matrix type of a material that is already defined in the system.
  
  Cause:
  
  
  Matrix Material Configuration: The error often arises when there is an attempt to change the matrix type of a material that is already set up as a matrix material. Matrix materials are used to manage products that have multiple variations (like size, color, etc.) and changing the matrix type can lead to inconsistencies in the data structure.
  
  
  Data Integrity Issues: The system may have internal checks that prevent changes to the matrix type if there are existing dependencies or configurations that rely on the current matrix type.
  
  
  System Bugs or Limitations: Sometimes, this error can be triggered by bugs in