Message type: E = Error
Message class:  CNV_10030 - Message class for package 10030 
Message number: 018
Message text: &1 cardinality requirements were loaded
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The SAP error message CNV_10030018 typically relates to issues encountered during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. The message indicates that there are cardinality requirements that were loaded, which may not align with the expected data model or configuration.
Cause: Cardinality Mismatch: The error often arises when the cardinality (the relationship between entities, such as one-to-one, one-to-many, etc.) defined in the data model does not match the actual data being loaded. This can happen if the source data does not conform to the expected structure or if there are inconsistencies in the data relationships.
Configuration Issues: There may be configuration settings in the migration tool or the target system that do not align with the source data. Data Quality Issues: The source data may contain duplicates, missing values, or other anomalies that violate the cardinality constraints.
Solution: Review Data Model: Check the data model definitions in
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