Hi! The reason for this is that adding the waterfall functionality would cause you to exceed the column limit. Our system has a maximum number of columns allowed, and adding waterfalls would push you beyond that. Some waterfalls, like email and phone number, can also take up more space due to validation and enrichment processes. I recommend deleting any unnecessary columns (but not those already used in waterfalls) before re-running the enrichment. Please note, any columns you delete cannot be recovered, so make sure you're only removing those you won’t need. Let me know if that helps!
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