Message type: E = Error
Message class:  KZ - Cost Object Repetitive Mfg / Process Mfg 
Message number: 044
Message text: No overhead keys exist for costing sheet &
No overhead key was found for costing sheet &v1&.
Check costing sheet &v1&.
To calculate overhead surcharges with reference to an overhead key, you
must enter other percentage or quantity-based surcharges in this
costing sheet.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message KZ044, which states "No overhead keys exist for costing sheet &," typically occurs in the context of product costing and is related to the configuration of overhead costs in the costing sheet. Here’s a breakdown of the cause, potential solutions, and related information:
Cause: Missing Overhead Keys: The error indicates that there are no overhead keys defined for the specified costing sheet. Overhead keys are essential for calculating overhead costs in product costing. Costing Sheet Configuration: The costing sheet may not be properly configured to include the necessary overhead keys. Master Data Issues: The material master or other related master data may not be set up correctly to reference the appropriate costing sheet.
Solution: Check Overhead Keys: Go to the transaction code OKTZ (Define Overhead Keys) in SAP. Verify if the overhead keys are defined for the costing sheet in question. If not, you will need to create or assign the appropriate overhead keys. Configure
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