Message type: E = Error
Message class:  KZ - Cost Object Repetitive Mfg / Process Mfg 
Message number: 257
Message text: Test mode "Process subhierarchy" deactivated
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The SAP error message KZ257, which states "Test mode 'Process subhierarchy' deactivated," typically occurs in the context of the SAP Controlling (CO) module, particularly when dealing with cost center accounting or internal orders. This message indicates that the system is not in a mode that allows for the processing of subhierarchies in a test scenario.
Cause: Test Mode Not Activated: The error usually arises when the test mode for processing subhierarchies is not activated in the system settings.
Configuration Issues: There may be configuration settings in the controlling area or the specific application that do not allow for the processing of subhierarchies in test mode. User Authorization: The user may not have the necessary authorizations to execute the process in test mode.
Solution: Activate Test Mode: Check the configuration settings in the SAP system to ensure that the test mode for processing subhierarchies is activated. This can typically be done in the configuration settings of the
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