If you have enabled secured connectivity
between the OPC UA DA server and the collector, you must add a client certificate to the
OPC UA DA server's trusted certificates list.
Access the installation folder of the server. Normally, it is inside the
ProgramFiles folder.
In the Rejected folder, copy the client certificate, and
paste it into the trusted certificates folder. To locate the trusted
certificates folder, refer to your OPC UA DA server documentation.