How To Fix CKMLMC021 - Material & cannot be changed in plant & in period &/&

SAP Error Message - Details

• Message type: E = Error

• Message class: CKMLMC - Manual Change of Actual Cost Component Splits

• Message number: 021

• Message text: Material & cannot be changed in plant & in period &/&

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 CKMLMC021 - Material & cannot be changed in plant & in period &/& ?

  The SAP error message CKMLMC021 typically indicates that a material cannot be changed in a specific plant and period due to certain restrictions or conditions in the system. This error is often encountered in the context of Material Ledger (ML) and can arise during various transactions, such as when trying to change material master data or perform inventory valuation.
  Cause:
  
  Period Locking: The period for the material in the specified plant is closed or locked. In SAP, financial periods can be closed for various reasons, such as month-end closing or year-end closing, preventing changes to material data.
  Material Ledger Settings: The Material Ledger may be configured in a way that restricts changes to certain periods or materials.
  Authorization Issues: The user may not have the necessary authorizations to make changes to the material in the specified plant and period.
  Data Consistency: There may be inconsistencies in the data that prevent changes from being made.
  
  Solution:
  
  
  Check Period Status: Verify if the period for the material in the specified plant is open. You can do this by checking the period status in the transaction code OB52 (for financial periods) or CKM3N (for Material Ledger).
  
  If the period is closed, you may need to open it temporarily to make the necessary changes, or wait until the next open period.
  
  
  
  Review Material Ledger Configuration: Ensure that the Material Ledger is properly configured and that there are no restrictions preventing changes in the specified period.
  
  
  User Authorizations: Check if the user has the necessary authorizations to make changes to the material. This can be done by reviewing the user's roles and authorizations in the system.
  
  
  Data Consistency Check: Run consistency checks to ensure that there are no data issues that might be causing the error. This can involve checking for any inconsistencies in the material master data or related tables.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for more specific guidance related to the error message and the context in which it occurs.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  MM02: Change Material Master
  CKM3N: Display Material Ledger
  OB52: Change View "Periods": Overview
  
  
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may resolve the issue.
  Support: If the issue persists, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  By following these steps, you should be able to identify the cause of the CKMLMC021 error and implement the appropriate solution.