I have recently been experiencing referrer errors in my Tradedoubler reports and wondered what they were and the impact.
Searching the web resulted in a number of postings advising that, following advice from Tradedoubler support, the errors did not impact your commission and did not relate to subdomains.
Well surprise, surprise they are not correct.
Once I explicitly registered the subdomains in the system the errors were seen no more. To be clear my affiliate site domain name was registered and it also housed several subdomains to house landing pages. Visits to the subdomain landing pages were not being properly registered in the system until I explicitly registered the domains with Tradedoubler.
Also think about it - the reports do not track the clicks from non registered subdomains so how can the system keep track of sales from these items.
I do not feel comfortable with “do not worry” statements and recommend you remove all the sources of errors in your reports. Tracking Affiliate commissions is not a science and can get tripped up by customers blocking cookies, using old browsers etc so cut your risks and attend to the source of your referrer errors.