RasSetEntryProperties ErrorCode 8

Hello,

my application creates RAS Connections using the function
RasSetEntryProperties.
In the most cases the connection is created. However, sometimes the function
RasSetEntryProperties returns with errorcode 8. But I do not find this
errorcode
in the list of RAS error codes which all have a number higher than 600.

Can anybody tell me what error this is, when error code 8 is returned?

Thanks,
Markus
.