Reason of failed review:

There is only one solder mask layer, in your file, we couldn’t confirm how to do the another solder mask layer.

Maybe the top and bottom solder mask layers are same, maybe the bottom solder mask layer is less, maybe there is no bottom solder mask layer, it will consider if you need to do cover with the solder mask ink all or not.

Suggestion:

1.Pls design complete top and bottom solder mask layer in your file even it is same.

2.Pls note how to do the bottom solder mask when you order online:

--Use the same solder mask layer as top side

--There is no bottom solder mask layer, pls cover with the solder mask ink all in the bottom side

     -- There is no bottom solder mask layer, pls do solder mask opening all in the bottom side