Which function is used to define key mapping in SAP Master Data Governance?

The correct function for defining key mapping in SAP Master Data Governance is during the data replication process. This step is crucial as it establishes how different systems correlate their master data records, ensuring consistency and integrity across various databases. Key mapping allows for the specification of unique identifiers that link records in the source system to corresponding records in the target system.

By defining key mapping during data replication, organizations ensure that when data is transferred or synchronized, it retains its relational links. This can help minimize errors in data management processes and facilitate smoother integration across systems.

Other methods mentioned, such as importing key mapping after data validation or using pre-defined templates, do not directly engage with the active replication phase, where actual data exchange occurs. Automatically generating key mapping offers convenience, but it may not always align perfectly with specific business requirements or data structures, making the manual definition during replication a more reliable option.