Order management. An initial indoor location inside a building is obtained with indoor positioning for a consumer mobile apparatus. Information relating to a common catalog including products available from a plurality of retail outlets inside the building is transmitted to the consumer mobile apparatus. A purchase order of products selected based on the information relating to the common catalog is received from the consumer mobile apparatus. A subsequent indoor location is obtained with the indoor positioning for the consumer mobile apparatus. If the subsequent indoor location is inside the building, a delivery location of the products inside the building is determined with the consumer mobile apparatus, and a delivery order of the products determining the delivery location and collection instructions for the products from the retail outlets inside the building is transmitted to a courier mobile apparatus.