How To Fix CKMLLA202 - Cross-period reversal not possible on account of active material ledger

SAP Error Message - Details

• Message type: E = Error

• Message class: CKMLLA - Message for Activity Update in Quantity Structure

• Message number: 202

• Message text: Cross-period reversal not possible on account of active material ledger

Self-Explanatory Message

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• What is the cause and solution for SAP error message CKMLLA202 - Cross-period reversal not possible on account of active material ledger ?

  The SAP error message CKMLLA202, which states "Cross-period reversal not possible on account of active material ledger," typically occurs when you attempt to reverse a transaction that affects multiple periods in a system where the Material Ledger is active. This error is related to the way the Material Ledger handles inventory valuation and postings across different periods.
  Cause:
  
  Active Material Ledger: The Material Ledger is designed to manage inventory valuation in a way that ensures that all postings are consistent and accurate across periods. When it is active, certain types of reversals that would affect multiple periods are restricted.
  Cross-Period Transactions: The error arises when you try to reverse a transaction that spans multiple accounting periods. The system does not allow this to maintain the integrity of the financial data.
  Period Locking: If the periods involved in the transaction are locked for posting, this can also lead to this error.
  
  Solution:
  
  Check Period Status: Ensure that the periods involved in the transaction are open for posting. You can do this by checking the period status in the transaction code OB52 (for controlling) or in the relevant financial module.
  Single Period Reversal: If possible, perform the reversal in the same period as the original transaction. This may involve adjusting your accounting entries to ensure they are confined to a single period.
  Use Special Transactions: In some cases, you may need to use specific transactions designed for handling reversals in the Material Ledger context. Consult your SAP documentation or support for guidance on these transactions.
  Consult with SAP Support: If the issue persists, it may be beneficial to consult with SAP support or your internal SAP team for further assistance. They can provide insights based on your specific configuration and usage of the Material Ledger.
  
  Related Information:
  
  Material Ledger Configuration: Understanding how the Material Ledger is configured in your SAP system can help in troubleshooting this error. Review the settings related to the Material Ledger in transaction code OML2.
  Documentation: Refer to SAP Help documentation for detailed information on the Material Ledger and its implications for financial transactions.
  User Exits and BAdIs: In some cases, custom logic implemented through user exits or BAdIs may affect how reversals are processed. Review any custom code that may be impacting this functionality.
  
  By following these steps, you should be able to address the CKMLLA202 error and successfully manage your material transactions within the SAP system.