Batched route requests are a hybrid of batch mode requests (explained in Batch Mode Route Request) and individual route requests. Batched route requests are a way to process multiple simple, simple multi-address, and TSP route requests in one request to the routing engine. Batching of batch mode requests is not allowed.
Like a batch mode request, the outermost element of a batched route request is <batch_route_request>. Unlike a batch mode request, batched route requests have one or more <route_request> elements nested inside the batch request.
In a batched route request, all attributes associated with the encompassing <batch_route_request> element are ignored. Instead, the attributes associated with the nested <route_request> elements are used when processing each individual route. This allows users to mix simple, simple multi-address, and TSP requests in a single batched individual route request.
The batched route request is useful for submitting multiple variations of a single route request with differing attributes and comparing the results, for example, for comparing the fastest route with the shortest route.
The individual route requests in a batched route request can use any of the attributes from simple route requests. They can also use any of the subroute-specific attributes of simple multi-address and TSP route requests.
All of the individual route requests in a batched route request are standalone; they have no effect on any other route request in the batch.