| COMMONSVCRQMSGS | This group contains the Request messages within the Account Service. |
| ItemIdInfo | The Item ID Information Aggregate is architectural in nature. It is used to identify an aggregate uniquely across transactions. |
| MsgSeqNumber | This is a control count which is incremented by 1 for each message (across multiple sessions) sent by a physical sender to a physical receiver. It has no direct relationship to Contract Number, but is related only to the physically communicating machines. The count is kept on a machine-to-machine basis. It must be checked by the physical receiving party to assure that no messages have been missed. |
| RqUID | Request Identifier. Sent by a client as a universally unique identifier for the message. |
| SPName | Service Provider name. To insure uniqueness, SPName must be an Internet domain name. |