What is detailed contact history?
Detailed contact history is populated only when data-driven offer personalization is used (where individuals in the same cell receive different offer versions: that is, offers with different values for personalized offer attributes). These details are written to the detailed contact history table (for example, UA_DtlContactHist) for each audience level.
There is a separate entry for a detailed contact history system table for each audience level you create. The detailed contact history stores the exact treatment(s) each audience entity received.
Detailed contact history records one row per audience ID-offer version pair. For example, if an individual receives three different offer versions, three rows are written to detailed contact history for that individual, and the three treaments will appear in the UA_Treatment table.
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Detailed contact history is written to the database for production runs only, not test runs.