I tried to run this report 5 times and I could not replicate the bad request error. However, there is no data being returned using this report definition.
Since you said that using this same code, this error is inconsistently generated, then I have a hunch that this is just a temporary issue on our servers. Could you try downloading the report again and let me know if the issue is consistent or not?
Note: I deleted your post as it contains your private information. In the future, please do not include any private information in a public post. You can refer to our
guide before posting.
Thanks,
Vincent
AdWords API Team