Mappings are read into the system using the ImportKeyValueMapping job step.
Generic mapping capability enables you to map keys to values, with the mapping stored in a high-performance data store that is independent of the database. This supports large datasets, with high performance for lookup. An example of using this feature is to map SKUs from a backend system to Commerce Cloud Digital SKUs on-the-fly in Digital script, so that interaction with the backend system is transparent and does not require adding Digital SKUs to the third party system.