I deleted your original post as it contains your confidential information such as your OAuth2 information and your clientCustomerId. In the future, please do not include any private information in a public post. You can refer to this
guide before posting. Re-posting this with masked information:
I want manage multiple unrelated accounts, I build OAuth2 sign-in flow into my application as part of adding OAuth2 support for my application.
webconfg:
<add key="AuthorizationMethod" value="OAuth2" />
<add key="OAuth2ClientId" value="XXXXXXXXXXXXXXXXXXXXXXx"/>
<add key="OAuth2ClientSecret" value="XXXXXXXXXXXXXXXXXXXxx"/>
<add key="OAuth2RedirectUri" value="XXXXXXXXX" />
<add key="OAuth2Mode" value="APPLICATION"/>
<add key="ClientCustomerId" value=""/>
<add key="DeveloperToken" value=""/>
accepp permision, after get campaign from customerId: XXX-XXX-XXXX
result => Developer token is not approved for production access, and the customer is attempting to access a production account.. (Error: QuotaCheckError.DEVELOPER_TOKEN_NOT_APPROVED, FieldPath: , Trigger: <null>)
How to access API Adwords from another account? from my application when i don't have Developer token from another account?