Message type: E = Error
Message class:  KJ - Cost Object Controlling for Make-to-Order Production 
Message number: 270
Message text: Product cost collector & processed (WIP was calculated)
<DS:GLOS.work_in_process>Work in process</> was successfully calculated
for <DS:GLOS.product_cost_collector>product cost collector</> &V1&.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message KJ270 indicates that there is an issue with a product cost collector, specifically that it has already been processed and that Work in Progress (WIP) has been calculated for it. This error typically arises in the context of product costing and production order management within SAP.
Cause: Already Processed Cost Collector: The product cost collector has already been processed in a previous period, and the system does not allow reprocessing of the same cost collector. WIP Calculation: The WIP has already been calculated for the cost collector, which means that the costs associated with the production have already been accounted for. Period Closing: The error may occur if you are trying to make changes or reprocess data in a closed period where WIP has already been settled. Data Integrity: There may be issues with data integrity or inconsistencies in the cost collector data.
Solution: Check Status: Verify the status of the product cost
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