Hey Clarice, I just took a look at your workspace and see you'll need at least 10 more enrichment columns to run a phone number waterfall here. I just increased your enrichment column limit from 30 to 40 for the next two weeks to accommodate this. Please be mindful you might experience performance issues with this higher limit that might impact the accessibility of your table if you keep your waterfalls in one table.
The safest option is to send the LinkedIn urls to a new table using write to other table, run the mobile phone number waterfall, and then conduct a Lookup enrichment in your original table to pull these phone numbers back. This will enable your table to run most effectively!