A retailer operates in United Kingdom, Belgium, and France, with each country’s local stores and warehouses grouped into their respective networks:

UK_LS and UK_WH for United Kingdom
BEL_LS and BEL_WH for Belgium
FRA_LS and FRA_WH for France

Sourcing priority

General

Priority is given to local stores within the regional network of the same country
The next choice is local stores within the regional network of a neighboring country
The last choice is any available warehouses

United Kingdom

If the order contains any Jewellery category items, source exclusively from U.K. networks (UK_LS, UK_WH) to comply with import restrictions
Apply tiered distance bands to prioritize closer fulfillment points first, reducing transit times and shipping costs while maintaining service-level agreements (SLAs)
Respect daily maximum order capacity to prevent operational overload, maintain consistent service quality, and avoid delays during peak demand periods

Belgium

Prioritize fulfillment from Belgian local stores (BEL_LS) first, then from France (FRA_LS) if needed
Apply distance-based prioritization to ensure efficient cross-border delivery only when necessary

France

Prioritize French local stores (FRA_LS), then source from Belgium (BEL_LS) if domestic stock is insufficient
Apply distance exclusion to meet delivery expectations, avoid excessive transit times, and maintain service quality.
Ensure that the sourcing logic always considers real-time inventory levels to minimize partial shipments, backorders, or cancellations caused by stock shortages