When you receive that message it means that a field that requires a certain number wasn't filled or it has wrong data.
I recommend checking the devices that you have and look for their CID. A CID is somehow similar to an UID. The CID should be extracted using an application or it's displayed on the support white sticker attached to the device in physical form. The CID is mandatory in case you want to add a device in SOPAS OPC-Server.