What does it mean when Google disapproves of your data feed?

What does it mean when google disapproves of your data feed from your online store? And does that mean you are not going to be found on google? All our data feeds were always approved until now. Did google change something?

not sure it can be several reasons you should take a look at the help pages regarding this that google sends you.

Are you using Auctiva Commerce by chance?

Other reasons I have learned by this is if your selling the same exact products on other venues then google will disapprove you but since you said you have been approved before that leads another open question.