Build app on IOS device

I run my project on IOS 8.4 device and I have error

An App ID with Identifier ‘com.estimote.IndoorMap’ is not available. Please enter a different string. Please help meimage

This usually means there’s some problem with your Apple Developer account setup, and specifically, with the provisioning profile used for code signing.

Here’s a handy Stack Overflow thread on how to try and fix that: