Message type: E = Error
Message class:  CNV_10020 - Message class for package 10020 
Message number: 599
Message text: Execution in test mode; no changes in the database
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The SAP error message CNV_10020599 indicates that a certain operation is being executed in test mode, which means that no actual changes are being made to the database. This is a common scenario when running data migration or conversion programs in SAP, where the intention is to validate the process without affecting the live data.
Cause: Test Mode Activation: The program or transaction is set to run in test mode. This is often a default setting for data migration or conversion tools to allow users to verify the process without making any changes to the database. Configuration Settings: The settings in the migration tool or program may be configured to run in test mode, either intentionally or due to a missing parameter. User Permissions: In some cases, user permissions may restrict the ability to execute changes, forcing the program to run in test mode.
Solution: Switch to Production Mode: If you intend to make actual changes
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