GTIN Exemption “Approved”. Now what?

I’m wanting to list an unbranded sports related generic product on Amazon. I have about 50 units total and would like to have Amazon fulfill my orders. I’ve applied for GTIN Exemption and have status “Approved”. The only option I have now is to just click “List” and start the whole process again. Do I need to wait for something from Amazon or am I in an endless loop? Thanks.