In part 6 the following txt exists:

"If the Message is secured with asymmetric algorithms, then the receiver shall verify that it supports the requested SecurityPolicy. If the Message is the response sent to the Client, then the SecurityPolicy shall be the same as the one specified in the request. In the Server, the SecurityPolicy shall be the same as the one used to originally create the SecureChannel. The receiver shall check that the Certificate is trusted first and return Bad_CertificateUntrusted on error. The receiver shall then verify the SenderCertificate using the rules defined in Part 4. The receiver shall report the appropriate error if Certificate validation fails. The receiver shall verify the ReceiverCertificateThumbprint and report a Bad_CertificateUnknown error if it does not recognize it"

the sentence "The receiver shall check that the Certificate is trusted first and return Bad_CertificateUntrusted on error" need to be removed since it should be Bad_securityChecksFailed