Just dumping ideas:

Are you accessing US/Canada based accounts? If so read this for more info:
http://developer.searchmarketing.yahoo.com/announcements.php

Can you post some code so we can try to reproduce errors?

Make sure headers are properly set (auth).

glhf :)

--- In yws-searchmarketing@yahoogroups.com, "geniusking.tw" <cltsai@...> wrote:
>
> Hello, I use BudgetingService updateAccountDailySpendLimit to update the
account's daily budget. There is no response and the update is fail!
>
> does anybody can use this method to update successfully?? Thanks.