Hi so 2 ad networks have written to me to add two lines into ads.txt in my root domain (this seems to be an IAB initiative):

indexexchange.com, Publisher account ID, Type of account (Direct or Reseller)

Another ad network says to add same domain different publisher account id.

Would adding the same domain (indexexchange.com) but with different pub id conflict with each other?

This is turning out to be a mild headache but I guess someone here will help. Thanks!