Not added to multiple engagement programs
I'm setting up multiple nurture programs. I only want contacts to be in one nurture program at a time. I created a new custom field called "Nurture Track" and will use Change Data Value in the flow to assign the nurture name to the Nurture Track field. As people are added the nurture, they'll be assigned the Nurture Track name of the program. When they complete the nurture (receive the last email in the series), their Nurture Track will be changed to NULL.
Is there a way for me to add this field to a filter in the Smart List to only allow people that do not have a value in Nurture Track (empty or NULL) to be added to the nurture program? If they have a value in that field, that means they are already in a nurture program and should not be added to another nurture program.
Am I going down the right path or is there a better way to ensure people are only in 1 nurture program at a time?
