I am trying to run my test lead in a campaign but the campaign that I am requesting is not showing up as an option for me. This campaign is active and it is the only campaign existing in the instance but I am not sure why I cannot choose in the picklist when I am trying to run my lead through the campaign.
No, that trigger is not in place. I want to go to the lead database, choose a test lead, and run it in the flow. That's what I mean by "request campaign." I am not sure why I can't do that.
Does your campaign have the Campaign is Requested trigger with a source type of Marketo Flow action? Is it active? Is it n the same workspace as the requesting campaign?
Does the campaign you are requesting have a "Campaign is Requested - Marketo Flow Action" trigger in the smart list? Without the addition of that trigger to the smart campaign's smart list, you won't be able to see it or request it.