This endpoint is used to retrieve the list of products and services that the merchant provides so that Groupon can make calls to the availability endpoints with the appropriate parameters.

Groupon calls the Content API to get information about services so we can  build a full service catalog for a merchant. The merchant ID used in the API call is unique to a location. Hence the service IDs are also expected to be unique by location. 

Groupon then works with the merchant to leverage their full catalog to create their presence on Groupon. All services must be the unique identifiers in your system because they will be what Groupon leverages for availability and booking connectivity (see Availability and Booking Creation for further details).