Optimize for new Lead conversion event

Facebook: optimize for new Lead conversion event

Hi marketers,

I have just set up a Lead conversion via the manual Event setup tool by adding the conversion to take place on a thank-you page URL which is served after a successful Gravity Form submission.

After choosing a Leads campaign objective with the performance goal of “Maximise number of conversion”, and after selecting Lead as my conversion event, Meta is telling me I may get zero leads.

Is this because Meta thinks the conversion I chose as my conversion event isn’t frequent enough? It’s not frequent as I literally just made it and waited 30 minutes for it to become active. Does Meta not understand this event is associated with a successful form submission (lead)?

I do want Meta to optimise my campaign for leads/form submissions but am I be better off choosing a new conversion event (or perhaps even a new campaign objective)?

We are a B2B company and I am looking at lead generation. Due to CRM issues at present, I am unable to use Instant Forms.

Thank you in advance and have a great evening.