You have a requirement to find/generate the API Key for the Google Maps mashup in Route Planning (for example: for presales purposes).
SAP Business ByDesign
In order to met the requirement, refer to below blogs,
These blogs help to get the API key as well the SAP BYD Google Route Planner Mashup
Google Maps; API key; Route Planner; Mashup , KBA , AP-RC-GEN-MSH , Mashups , How To