Hi! I'm just getting started on importing all of my contacts. I've entered various data in the Lead Source column, but upon trying to upload everything I get the error that the "picklist value is not active" within this field. What does that mean and how do I fix it? Do I need to put my data under a different column name, like Contact Note? I'm trying to enter information as to how our donors have been involved with us over the years - various events and donations.