Thanks for reaching out to us.
SOAP logs can be retrieved from the API by simply sending an API request (from any service of the API) and having the response printed to your console. Enabling detailed SOAP logging permits the complete details to be returned, so it's highly suggested for you to do so in order to conduct an efficient investigation on the matter. That being said, this is the guide for enabling detailed SOAP logging with the PHP client library; we would simply request for you to modify the INFO values to DEBUG.
With regard to your question, it's SOAP logs of where you had encountered the issue while using the Ad Manager API. May I ask for you to provide more details to your concern so that we may further investigate? Are you having an issue with one of your creatives? If that is not the case, are you having problems with your VAST while using the IMA SDK?
If you are to support your response with information containing sensitive data, it's best to send out the reply via Reply privately to author option.