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processingInformation. leastCostRouting {#processing-info-least-cost-routing}
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Flag that specifies whether to request that the processor use least-cost routing for the transaction.  
This field is available only on the `FDI Australia` and `Worldpay VAP` processors.  
When the request includes this field, this value overrides the information in your account.  
Possible values:

* Y: Request that the processor use least-cost routing for the transaction
* N (default): Do not request that the processor use least-cost routing for the transaction

Specifications {#processing-info-least-cost-routing_Specifications}
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* **Data Type:** String
* **Data Length:** 1

Mapping Information {#processing-info-least-cost-routing_Mapping}
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* **REST API Field:** processingInformation.leastCostRouting
* **SCMP API Field:** auth_least_cost_routing
* **Simple Order API Field:** ccAuthService_leastCostRouting  
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