MI1 Mileage Source
To identify the source of the mileage tables used to request or propose a rate and to indicate the tables version
Mileage Source Code
Code identifying the source of the mileage
Yes/No Condition or Response Code
Code indicating a Yes or No condition or response
MI102 indicates whether the current version of the mileage source is being used. A "Y" indicates that the current version of the mileage source is being used; an "N" indicates that a previous version of the mileage source is being used.
A generic number
MI103 is only used if the code in MI102 is "N".
MI103 is the version number of the mileage source if the current version is not being used.