checkin replies Error=UNKNOWN_ERR

[cryptax]

Hi,
I want to generate an Android ID.
With a gmail account I just created, I get:

  java -jar googleplaycrawler-0.3.jar --email xxxxx@gmail.com --password xxxxxx --localization fr-FR checkin
  Error=UNKNOWN_ERR

whereas it works with an older account I have.
What does UNKNOWN_ERR mean?

NB. I double checked the password and email are valid.

[stefanjauker]

It means that the account must accept terms&conditions.
You must add you account on your android phone

[cryptax]

Thanks! Indeed, it worked after adding the account and waiting a few secs/mins.
Is there a way to automate this (adding the account on the phone)?

java -jar googleplaycrawler-0.3.jar --email xxxx --password xxx --localization fr-FR checkin
Your account succesfully checkined!
AndroidID : xxxxxxxxxxx
SecurityToken : xxxxxx