Submetering industry terms and vocabulary

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Term Main definition
Auto Key Change

The term “Auto Key Change” used to refer to a scenario where the Vending Machine automatically triggered the generation of a Key Change Token when the information on the Meter Database is different from the meter information on the Meter Card. It is recommended that the Online Vending System do not use Auto Key Change. Auto Key change is not ideal for a Client-Server scenario since that makes any subsequent vending operations dependant on a successful previous operations. Such transaction dependencies create several complex error scenarios that will have to be resolved or absorbed in the process.

The Online Vending Server will instead respond with an appropriate error message if it detects that a Key Change is required.