The IS version I am using was 7.1.2 and applying IS_7.1.2_Core_Fix30 resolved the problem.
I cant find any similar fix apply for IS 7.1.1 :sad:
If possible pls apply to the latest IS.7.1.1 Core Fix 19 and reproduce the process in testing environment to avoid the production down.
Have you validate that XSD bug free?
#webMethods#Flow-and-Java-services#Integration-Server-and-ESB