Hey Dean,
Coming to this reported log error message, please find below the meaning and remedy for the same:
They are logged when the size of Identity database reaches near to max size configured. Before adding any new information in identity management, check for memory availability is performed. If 90% of the maximum allocated memory is already used and new information is to be added to the database, then these will be generated. This can be an indicator of error condition as too many identities have been discovered on the device
Remedy:
This message is for error notification purpose, and indicates that too many users/device have been detected on the device. Admin may want to check the reason for the discovery of so many identities on the device. Also, admin may want to check the configured memory size for identity database and increase the memory size, if required.