MCC Account causes internal errors

[Kim]

If you (by mistake) use a MCC account to e.g. add a campaign, the
AdWords API will fall over with "Internal Server Error". I am well
aware, that MCC accounts should not be used to create campaigns.
However, if a user by mistake provides the wrong account info the given
error message does not help diagnosing the problem.

I include the full request and response:

POST /api/adwords/v2/CampaignService HTTP/1.0
Content-Type: text/xml; charset=utf-8
Accept: application/soap+xml, application/dime, multipart/related,
text/*
User-Agent: Axis/1.2RC2
Host: adwords.google.com
Cache-Control: no-cache
Pragma: no-cache
SOAPAction: ""
Content-Length: 1341

<soapenv:Envelope
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><soapenv:Header><ns1:email
soapenv:actor="http://schemas.xmlsoap.org/soap/actor/next"
soapenv:mustUnderstand="0"
xmlns:ns1="https://adwords.google.com/api/adwords/v2">####</ns1:email><ns2:password
soapenv:actor="http://schemas.xmlsoap.org/soap/actor/next"
soapenv:mustUnderstand="0"
xmlns:ns2="https://adwords.google.com/api/adwords/v2">####</ns2:password><ns3:useragent
soapenv:actor="http://schemas.xmlsoap.org/soap/actor/next"
soapenv:mustUnderstand="0"
xmlns:ns3="https://adwords.google.com/api/adwords/v2">Inceptor,
Inc</ns3:useragent><ns4:token
soapenv:actor="http://schemas.xmlsoap.org/soap/actor/next"
soapenv:mustUnderstand="0"
xmlns:ns4="https://adwords.google.com/api/adwords/v2">####</ns4:token></soapenv:Header><soapenv:Body><addCampaign
xmlns="https://adwords.google.com/api/adwords/v2"><campaign><id>0</id><name>Internal
Error Test 1139578725491</name><status
xsi:nil="true"/><dailyBudget>50000</dailyBudget><optInSearchNetwork
xsi:nil="true"/><optInContentNetwork xsi:nil="true"/><languageTargeting
xsi:nil="true"/><geoTargeting
xsi:nil="true"/></campaign></addCampaign></soapenv:Body></soapenv:Envelope>

HTTP/1.0 500 Internal Server Error
Content-Type text/xml; charset=utf-8
Cache-control private
Date Fri, 10 Feb 2006 13:38:45 GMT
Server GFE/1.3
Connection Close

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><soapenv:Body><soapenv:Fault><faultcode>soapenv:Server.generalException</faultcode><faultstring>An
internal error has occurred. Please retry your
request.</faultstring><detail><ns1:code
xmlns:ns1="https://adwords.google.com/api/adwords/v2">0</ns1:code><ns2:message
xmlns:ns2="https://adwords.google.com/api/adwords/v2">An internal error
has occurred. Please retry your
request.</ns2:message></detail></soapenv:Fault></soapenv:Body></soapenv:Envelope>