Message type: E = Error
Message class:  KJ - Cost Object Controlling for Make-to-Order Production 
Message number: 834
Message text: ML WIP is not supported for plant &1, please use KKAO.
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The SAP error message KJ834 indicates that the "ML WIP (Work in Progress) is not supported for plant &1," and it suggests using transaction KKAO instead. This error typically arises in the context of production and cost accounting when trying to perform a process that is not supported for the specified plant.
Cause: Configuration Issue: The plant in question may not be configured to support the Material Ledger (ML) for Work in Progress (WIP) accounting. This can happen if the Material Ledger is not activated for that plant. Transaction Misuse: The user may be trying to execute a transaction that is not applicable for the current configuration of the plant. System Settings: The system settings for the plant may not allow for the processing of WIP in the context of the Material Ledger.
Solution: Check Material Ledger Activation: Go to the configuration settings in SAP and check if the Material Ledger is activated for the plant in
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