5.12 Attribute Pair Object

An attribute pair object is a pair of attributes and it is used for defining compatibility relationships between various entities. (See Section  2.17 for more information). It has the following fields:

1. Field: attribute1
   Required: Yes.
   Type: String.
   Description: It may be the order attribute in order-vehicle compatibility or order attribute in order-order compatibility.
2. Field: attribute2
   Required: Yes.
   Type: String.
   Description: It may be the vehicle attribute in order-vehicle compatibility or order attribute in order-order compatibility.