11. Invalid Process Handle.
From 4.620. Occurs if AUXDISTR is called by a program using an invalid process number. In future this error may also be reported by DP4SRVR, which currently typically generates FAIL 6 0 10 if it is called with an invalid process number (it tries to generate system error 10 0, but because the system database is not open for the process a fail 6 0 10 is generated). If this error occurs there is a serious bug in your program and you should terminate.