PPC Data and orders don’t match

Hello,

I am stuck and I don’t know which numbers are truly relevant. This is the case:

I have an ASIN in 4 different PPC campaigns. In ads console, this ASIN reports a total of 38 sales counting all campaigns. I thought that I would have more sales, since these numbers are just for PPC sales and I have organic sales too.

In seller central, in order management, for the same period of time, this ASIN reports 21 sales. This report is for PPC sales and organic sales, and the number is less than just PPC sales alone…

Sorry if my explanation is not clear, I hope that you can understand me.
Any clue about what’s going on?