| AccountID | Identifier of the account |
| BuyerContact | Identifies the contact information for the buying person, organization, department, or group on the associated document or line. |
 Contact | Contacts are the point of communication with the given party. In the case of an organization it may be the requestioner, the buyer, customer service, etc. |
| CustomerAccountID | This is the Account Identification assigned to the customer (Payer) by the Supplier (Payee) |
| Location | The location of a thing, as captured by an address (or addresses), GPS Coordinates, and/or in relation to other locations. |
| Name | Identifies the Name of the object in which associated. |
| PartyIDs | Contains the set of possible identifiers for an associated Party. |
| PlannerContact | Identifies the contact information of the person, organization, department, or group that planned for the timing of the exchange of goods/services that this document is associated at the document or line level. |
| ReceivingContact | Identifies the contact information of the person, organization, department, or group that is to receive the contents communicated by the document or line. |
| RequesterContact | Identifies the contact information for the requesting person, organization, department, or group on the associated document or line. |
| UserArea | Allows the user of OAGIS to extend the specification in order to provide additional information that is not captured in OAGIS. |