This environment variable only applies to Windows NT.
The compiler uses this environment variable to locate all of the SAPDB-internal include files.
The following entries must be listed here:
%DBROOT%\incl
%TOOL%\incl
%OWN%\sys\wrk\incl
%OWN%\sys\wrk\incl\SAPDB
This environment variable is set by the initialization script
initDev_SAPDB(.bat) ( Environment Variables).