Message type: E = Error
Message class:  IDFIVAT - FI Localization 
Message number: 063
Message text: Update documents: Update run not allowed in combination with Test Run.
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The SAP error message IDFIVAT063, which states "Update documents: Update run not allowed in combination with Test Run," typically occurs when you are trying to execute a process that involves updating documents in a test run mode. This error is common in scenarios where you are performing a test run for a financial or VAT-related update, and the system is configured to prevent actual updates during this mode.
Cause: Test Run Mode: The process you are trying to execute is set to run in test mode, which is designed to simulate the execution without making any actual changes to the database. Configuration Settings: The system settings or the specific transaction you are using may not allow updates during a test run to prevent unintended changes. Transaction Type: Certain transactions or reports in SAP are specifically designed to either run in update mode or test mode, and mixing these modes can lead to this error.
Solution: Switch
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