List Of Commercial Agents I Auditioned For A Commercial Role, Agent Called, They Were Asked To Put Me On Avail List-what Is It Though?

I auditioned for a commercial role, agent called, they were asked to put me on avail list-what is it though? - list of commercial agents

This is history, as has been said, I applied for an ad and called my agent the next morning. Initially started to say it was a recall, but then changed his mind and said it was a time (power) on the list. He asked me whether I will be available Saturday. I know that the current outbreak is a Saturday, but does not say whether he got the part and was a backup, or even what is on the list. Has this ever happened to anyone, and what does this mean? Thank you in advance for your answers.