Message type: E = Error
Message class:  FCO_OVHD - Message class for overhead calculations 
Message number: 002
Message text: Function module: &1 has returned "NOT ACTIVE" exception.
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The SAP error message FCO_OVHD002 indicates that a function module has returned a "NOT ACTIVE" exception. This typically means that the function module you are trying to call is not currently active in the system. Here’s a breakdown of the cause, potential solutions, and related information:
Cause: Inactive Function Module: The function module you are trying to use is not active. This can happen if it has been recently created or modified and has not been activated yet. Transport Issues: If the function module was transported from another system, it may not have been activated in the target system. Authorization Issues: Sometimes, the user executing the function may not have the necessary authorizations to access the function module. System Configuration: There may be configuration issues or missing dependencies that prevent the function module from being active.
Solution: Activate the Function Module: Go to transaction code SE37 (Function Builder). Enter the name of the function module that is causing the
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