Overview Alpaca Broker - incoming transaction

Hello,

I have a few questions. I just signed up and would like to use alpaca solely for paper trading. Per accident, I opened a Broker account. I see now there is a transaction incoming (which is probably initiated automatically – ACH) can someone shed light on what this is, and will I be charged in any way for it? I am already aware that I chose the wrong set up and should utilize another account option.

Best,
Gil