The following error can be seen in the SsoService.log:
SsoRedirectUrl appears to be invalid: SsoProductCode=pc
All supported releases of DX NetOps Performance Management
The IDP is configured to drop any input once an '&' is detected
Have the IDP set the RelayState to (substituting the scheme, hostname, and port to match your Portal environment): SsoRedirectUrl=http://<portalHostname>:8181/pc/desktop/page