When I generate an attachment from the API in java via xmlrpc, once I access this attachment and download it the pdf is unstyled. 
This happens to me for both invoices with sales orders. From the web, when downloading a pdf, it´s generated correctly, but from the Api it's impossible.
I´ve tried to add system parameters such as:

report.url = http://localhost:8069
web.base.url.freeze = True

But without any result. Can someone help me please?