An ArcGIS Server 9.3.1 map service with the Web Map Service (WMS) capability enabled using a Styled Layer Descriptor (SLD) file based on a Map Server Definition (MSD), fails on a GetMap request when LAYERS=0,1&STYLES=&.
This issue is not reproducible in the current release of the software. If this problem occurs, please contact Esri Technical Support (for customers in the United States) or Esri distributor (for customers outside the United States).
対処法
Publish a Map Exchange Document (MXD) as a map service with Web Map Services (WMS) capabilities.