Message type: E = Error
Message class:  CNV_PE_S4 - Messages for Posting Engine S/4 Content 
Message number: 057
Message text: No target value specified for Customer &1;specify target value to proceed
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The SAP error message CNV_PE_S4057 indicates that there is no target value specified for a customer in a data migration or conversion process. This error typically arises during the execution of a conversion program, particularly in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer processes.
Cause: The error occurs when the system expects a target value (such as a new customer ID, customer group, or other relevant data) for a customer record, but this value has not been provided. This can happen due to: Missing Data: The source data does not contain the necessary target values for the customer records.
Configuration Issues: The mapping or transformation rules in the migration tool may not be set up correctly, leading to missing target values. Data Inconsistencies: There may be inconsistencies or errors in the source data that prevent the system from determining the appropriate target values.
Solution: To resolve
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