Duplicate field in SOAP Header

Hy Guys,

I was migrating a set of applications from nw70 to nw74 and I got an error when a web dynpro model calls one PI web service.

Analyzing the PI context we saw the message "Number of xml tag WSCorIDSOAPHeader is 2, expected number is 1" and the PI soap envelope that arrives at the channel really have two tags WSCorIDSOAPHeader.

Someone else has seen it before??

Thanks,