Message type: E = Error
Message class:  CNV_DMC_SIN - Messages for s-innovations migration 
Message number: 164
Message text: Rule &1, Target Country Key &2 / &3 does not exist.
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The SAP error message CNV_DMC_SIN164 typically occurs during data migration processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This error indicates that a specific rule or mapping for a target country key does not exist in the system. Here’s a breakdown of the cause, potential solutions, and related information:
Cause: Missing Configuration: The target country key specified in the error message is not configured in the system. This could be due to missing entries in the relevant tables or settings. Incorrect Mapping: The mapping rules defined for the data migration might not include the specified country key, leading to this error. Data Quality Issues: The source data might contain country keys that do not match any existing keys in the target system.
Solution: Check Configuration: Verify that the target country key exists in the relevant configuration tables (e.g., T005 for country codes). Ensure that the country key is correctly defined in the target
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