How To Fix OM451 - Material ledger for valuation area & already deactivated

SAP Error Message - Details

• Message type: E = Error

• Message class: OM - Customizing Materialwirtschaft

• Message number: 451

• Message text: Material ledger for valuation area & already deactivated

What causes this issue?

You attempted to deactivate the material ledger for valuation area &v1&
- but it has already been deactivated.

System Response

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

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OM451 - Material ledger for valuation area & already deactivated ?

  The SAP error message OM451 indicates that the Material Ledger for a specific valuation area has already been deactivated. This typically occurs when you attempt to perform operations that require the Material Ledger to be active, but it has been turned off for the specified valuation area.
  Cause:
  
  Deactivation of Material Ledger: The Material Ledger was intentionally deactivated for the valuation area in question. This can happen due to changes in business processes or configuration settings.
  Incorrect Configuration: The system may have been incorrectly configured, leading to the Material Ledger being deactivated when it should be active.
  Transaction Type: You may be trying to execute a transaction that requires the Material Ledger to be active, such as posting a goods movement or performing a valuation.
  
  Solution:
  
  
  Re-activate Material Ledger:
  
  Go to the configuration settings in SAP.
  Navigate to the path: Logistics > Materials Management > Material Master > Material Ledger > Activate Material Ledger.
  Select the appropriate valuation area and re-activate the Material Ledger.
  
  
  
  Check Configuration:
  
  Ensure that the configuration settings for the Material Ledger are correct.
  Verify that the valuation area is set up properly and that the Material Ledger is intended to be used.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to the Material Ledger to understand the implications of activation and deactivation.
  
  
  
  Testing:
  
  After re-activating the Material Ledger, perform a test transaction to ensure that the error does not reoccur.
  
  
  
  Consult with SAP Support:
  
  If you are unsure about making changes or if the issue persists, consider reaching out to SAP support or your internal SAP team for assistance.
  
  
  
  Related Information:
  
  Material Ledger: The Material Ledger is a tool in SAP that allows for the management of inventory valuation and provides functionalities for actual costing.
  Valuation Area: This is typically defined at the plant level in SAP and is crucial for inventory management and financial reporting.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OMK4 (for activating the Material Ledger) and MM02 (to change material master data).
  
  By following these steps, you should be able to resolve the OM451 error and ensure that the Material Ledger is functioning as intended for your valuation area.