Hi Matthias,
RSSIDL_SIMPLIFY_WSDL is a program that was created for this purpose, it can be run from se38. You input the WSDL file that has the correct references to the external schema files and the program will return a so-called monolithic WSDL file that includes all in one file.
It was delivered with note 2001539
|VALID FOR
| Release 702 SAPKB70213 - SAPKB70215 |
| Release 730 SAPKB73011 - SAPKB73011 |
| Release 731 SAPKB73111 - SAPKB73112
Botond