Message type: E = Error
Message class:  CNV_20400_CHECK - Messages for check functions (controlling area merge) 
Message number: 035
Message text: Controlling area &1 has "All Currencies" active
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The SAP error message CNV_20400_CHECK035 indicates that the controlling area specified (denoted as &1) has the "All Currencies" option active. This can lead to issues during data migration or conversion processes, particularly when working with financial data or controlling (CO) modules.
Cause: The error typically arises in scenarios where: The controlling area is set to allow all currencies, which can complicate data consistency and integrity during migration. The migration process may require specific currency settings or may not support the "All Currencies" configuration.
Solution: To resolve this error, you can consider the following steps: Check Controlling Area Settings: Navigate to the controlling area settings in SAP (Transaction code: OX19). Verify the currency settings for the controlling area in question. Change Currency Settings: If feasible, change the currency settings of the controlling area to a specific currency (e.g., local currency or group currency) instead of "All Currencies". This may involve consulting with your finance team to ensure that the change aligns with your
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