Hi Eric, Thanks for your response. Here is what I found out.
Both methods: getClientAccountInfos and getClientAccounts returns email_address_1 as identified of my client mcc account. When I specify this email address the error I mentioned occures. However, I logged in via AdWords interface, and found out that for that client mcc account apart from email_address_1 there is also email_address_2 under 'Users with account access' in Account Access section Funny thing is that using email_address_2 in the header request I am able to get account info and client list of that mcc account. So there is a question, why API returns me the email address that I cannot use in the header later on? Do you have any ideas? Best Rafal -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog and discussion group: http://adwordsapi.blogspot.com http://groups.google.com/group/adwords-api =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To post to this group, send email to adwords-api@googlegroups.com To unsubscribe from this group, send email to adwords-api+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en