Error 404: javax.servlet.ServletException: java.io.FileNotFoundException: SRVE0190E: File not found

Hi.
I'm having problems scrapping a page, at the key pages it return "Error 404: javax.servlet.ServletException: java.io.FileNotFoundException: SRVE0190E: File not found ###/####"
apparently, the requests sent are correct.
I have to use "Request entity" params and is in that pages where i get the error at the body of the "last Response".
Do you know this issue? can be solved?

Thanks a lot.
Br

All I can tell from the error

All I can tell from the error is that there is a problem with the request, but no idea what it might be. I would use the tool on the scrapeable file > last request tab to compare to the request in the screen-scraper proxy session, then try to get the parameters, headers, and cookies to be exactly the same on the scrape.