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The Personalization system accepts both offline and historical order data through XML imports, in addition to order data collected through a Personalization tracking implementation. Offline and historical order processing can enrich the data used by algorithms and lead to improved recommendation quality.

## Offline and historical B2B orders

B2B uses customerId  for offline and historical orders. The following code shows an XML sample of an order with customerId:

Offline and historical orders

This topic provides a code sample for importing offline and historical data through XML.

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