AirDrop - Custom file app not installed (for receiver)

Question

After .plist UTI configuration for sharing a custom object, The receiver gets a message:

"the sender would like to share a file that requires an app from the App Store"

I can guess I missing something related to bundle identifier, but without success.

where is my error? what can lead to this error?

Details:

• I'm testing on two devices
• The app is installed on two devices.
• The file is generate from my app.
• The is custom UTI.