Hi lihicani
Can you please describe exactly what you mean by 'validate a soap message'?
Do you just mean publish the soap message to the endpoint (that includes a schema for message validation) or do you mean something else? (i.e. check your soap message against a schema?) - I don't think you mean the second, but I just want to be clear.
When you say it "always show me an error : line -1: null..." - can you please confirm the following:
1. The request headers you are submitting along with your request
2. The RAW details of your response - either it's in detail in the RAW tab but if nothing's there, can you scrape the content out of the http log please? I'm looking to see the complete response - that's payload and headers.
3. What does it say in the errors log?
Also - you have a lot of tags in your soap message that contain just the ? character - have you confirmed these tags don't need to be populated?
Cheers,
rich