Standalone SAP Web Dispatcher & wdisp/permission_table problem

Dear all,

I am trying to configure standalone web dispatchers for several SAP systems.

I have give the wdisp/permission_table parameter a value in the profile file.

After running sapwebdisp -checkconfig, I get the following errors:

[Thr 2196] ICR: update server info from description file.

[Thr 2196] *** ERROR => could not open server description file 'C:\usr\sap\<SAPSID>\profile\<SAPSID>_saprouttrab.txt'. [ictxxtool.c  115]

[Thr 2196] ICR: IcrIUpdatePermissionTableFromDescrFile() -> 20

[Thr 2196] *** ERROR => IctUpdatePermissionTableFromDescrFile() failed 20 [icrxx.c      3737]

[Thr 2196] *** ERROR => IcrMain: IcrInit failed (rc=-1) [icxxman.c    782]

I have tried to google those errors but with no success.

Any suggestions on how to proceed?

Thanks & regards,