VT_CAB

This composite record type has a size field and a binary stream field. Except for PROPID_M_SECURITY_CONTEXT (cannot be received), PROPID_M_SENDERID, PROPID_M_MSGID and PROPID_M_SIGNATURE (cannot be set), all properties of this type can be used in mapping. MSMQ limits the size of PROPID_M_CORRELATIONID and PROPID_M_MSGID to 20 bytes. The adapter copies only the first 20 bytes in and out.