Contains the reason why a CM's certificate is deemed valid or invalid. Return unknown(0) if the CM is running BPI mode. ValidCmChained(1) means the certificate is valid because it chains to a valid certificate. ValidCmTrusted(2) means the certificate is valid because it has been provisioned (in the docsBpi2CmtsProvisionedCmCert table) to be trusted. InvalidCmUntrusted(3) means the certificate is invalid because it has been provisioned (in the docsBpi2CmtsProvisionedCmCert table) to be untrusted. InvalidCAUntrusted(4) means the certificate is invalid because it chains to an untrusted certificate. InvalidCmOther(5) and InvalidCAOther(6) refer to errors in parsing, validity periods, etc., which are attributable to the CM certificate or its chain, respectively; additional information may be found in docsBpi2AuthRejectErrorString for these types of errors.