Generating and submitting a zip file

Another thing, we are building this app to upgrade an old DPS app. But the old one don't have in-app purchase, and for this one, by default we need to configure ID for collections – even if they are free. This could be impacting?

No, that wont matter.

Neil

Neil, now we tried to upload via DPS App Builder and it worked. So, we assumed that's the problem is not related with the certificate. 

What do you mean by "upload via DPS App Builder"? App Builder doesn't support uploading.

Neil

Neil, when we use the same certificates to sign the distribution package of an app built in the old version of DPS it works well with the application loader. Using these same certificates on the Adobe DPS app signing tool to sign an app built in DPS 2015, it doesn't work well. Screenshots below:

Just FYI, I'm following up with this customer offline but I want to mention I did run a test of my own with my account and I'm not getting any error, just the same warning.

The DPS 2015 Distribution binary has uploaded.