Message type: E = Error
Message class:  HR_FM_BUDGET_PD - HR: Text for Funds Management Budget Period Integration 
Message number: 018
Message text: Indicator for budget period is not activated
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The SAP error message HR_FM_BUDGET_PD018, which states "Indicator for budget period is not activated," typically occurs in the context of budget management within the SAP Human Resources (HR) module, particularly when dealing with budgetary control in the Funds Management (FM) component.
Cause: This error indicates that the budget period indicator has not been activated for the specific budget structure or budget type you are trying to use. This can happen for several reasons: Configuration Issue: The budget period indicator may not have been set up correctly in the system configuration. Missing Activation: The budget period indicator might not have been activated for the relevant budget type or fiscal year. Incorrect Settings: The settings for the budget period in the Funds Management configuration may not align with the requirements of the HR module.
Solution: To resolve this error, you can follow these steps: Check Configuration: Go to the SAP Easy Access screen and navigate to the Funds Management configuration. Check the
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