Bug: A GetMap request returns a response even when the response contains an invalid first layer and a valid second layer
** This issue is addressed in ArcIMS 9.0 Service Pack 2 (SP2) **
When a GetMap request contains two layers where the first is invalid and the second is valid, then the response should be an exception (code="LayerNotDefined").
- ArcIMS 9.0 Service Pack 2
- If 'service=wms' is not included in the request string, a GetCapabilities request gives a response
- GetMap and GetFeatureInfo will return a request without having the required WBS parameter VERSION