It indicates an attacker attempted a Cross-Site Scripting (XSS) attack against Sap Internet Transaction Server. The SAP Internet Transaction server is vulnerable to multiple Cross-Site Scripting attacks via the service paramater in the wgate.dll.
SAP Internet Transaction Server 46188.8.131.523011 Build 46B.323011
Compromise of the affected system.
Apply appropriate patch from the vendor or Upgrade to non-vulnerable version if available.