developer token and test account

[google-...@bileti-v-teatr.ru]

I want to connect to the Adwords API. I use test account and googleads-python-lib but I get error:

Server raised fault: '[QuotaCheckError.INVALID_TOKEN_HEADER @ ; trigger:'ABcdeFGH93KL-NOPQ_STUv']'.

I think what reason in developer token.

Documentation "Test account access does not require an approved developer token, so you can start experimenting with the AdWords API before your application is reviewed."

Help me please. I do not need approved developer token or any developer token?

[Raghavendra Soudala (AdWords API Team)]

Hi,

A developer token is required to issue API requests against Test or Production accounts. The only difference is that your token should be approved to use it against the Production account, whereas approval is not required for Test accounts. 

To apply for a developer token, you need an MCC account. Steps for signing up for an MCC and applying for a developer token are outlined in the following document.

Cheers,

Raghavendra, AdWords API Team.

[Agung Firdaus]

In my case,
it solved by remove extra whitespace or \r\n at developerToken value of SOAP header request xml

check it out: https://groups.google.com/forum/#!topic/adwords-api/0IgvKCu-IKg

hope that help,
AF