Hi, this helped me solve it, thank you! I had actually assigned segment codes in the split activity; once removed those, the split activity ran and segment population count - as expected. But now, to complicate the scenario a bit - what if before the split I'm using an enrichment ? (I'm loading some data and the query will be made by one of the fields loaded; also, one of the fields previously loaded will be used in the delivery. Do you see any solution for this?