Message type: E = Error
Message class:  CNV - Conversion: Messages for Conversion Services (CNCC) 
Message number: 057
Message text: Entry for phase &1, program &2 and table &3 not found
You tried to start a program that does not have an entry in status
management.
The program is not started.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV057, which states "Entry for phase &1, program &2 and table &3 not found," typically occurs during data migration or conversion processes, particularly when using SAP's Conversion Tools or during the execution of a migration project. This error indicates that the system is unable to find a specific entry in the migration tables that is required for the current phase of the migration process. Causes: Missing Entries: The most common cause is that the required entry for the specified phase, program, and table is missing from the relevant migration tables. Incorrect Configuration: There may be an issue with the configuration of the migration project, leading to the system looking for entries that do not exist. Incomplete Migration Setup: If the migration setup was not completed properly, it could lead to missing entries. Version Mismatch: The error may also arise if there is a mismatch between the version of the migration tool
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