The LXI Certificate schema indicates a single X.509 certificate, certificate chain, or CSR (Certificate Signing Request) that is on the device.
The certificate is not included in this schema, rather the entity on the device is identified using a GUID. The GUID is assigned by the device and is returned by the Certificate List API.
The GUID identifies the certificate, certificate list, or CSR. The GUID is returned by the Certificate List API.