I have a requirement where I have got a list of promo codes. I would need to pick up random (non-repeating) promo codes from the list and add them to the query data (one promo code to one email id) and send out a delivery.
Tried adding a readlist activity and enrich the query data with a value from the list. But problem is, I do not have a link to get a specific promo code and add it to a particular email id entry.
Only way I think to do it adding a common identifier in both transaction, which could be row id in both the case. Before enrichment activity add row id in both the transaction and use it to link with each other. You will find a row id function in advance expressions while adding additional info.