If you are running Domino 10.0.1 Servers with German Language Pack and trying to implement SAML authentication mechanism, make sure to switch to the English version of the IdP Catalog database.
Or else you could run into the problem with creating the Service Provider Certificate by using the “Create SP Certificate” button in the “IdP Configuration” document, this action will create the certificate, but it will not create the “ServiceProvider.xml” file. When doing so, I got the following error:
Agent message: CreateIdPXML error 91 (Object variable not set) line 19 Please pass this error message to your notes admin
We had this issue in two customer environments, using Domino Version 10.0.1 to 10.0.1 FP3.