Prioritize WMS/API integration, pick/pack accuracy, dock and staging capacity, multi‑temperature capabilities, and value‑added services (kitting, returns). Also assess SLAs for order lead times, inventory visibility, and the 3PL’s experience with cross‑border customs and carrier networks.

Lower real‑estate and labor costs in Trebinje can reduce fixed and variable warehousing spend, improving margin versus coastal hubs. Account for trade‑route transit time, border fees, and potential carrier surcharges—model cost‑to‑serve by SKU and lane to validate net savings.

Key factors include trunk road quality to border crossings and ports, number of dock doors and trailer parking, proximity to key carriers and freight forwarders, and availability of rail or short‑sea options via nearby ports. Confirm reliable transit windows and carrier schedules.

Require real‑time inventory visibility, EDI/API order flows, configurable WMS rules for batching and lot control, automated reporting, and clear SLA metrics (OTIF, pick accuracy, lead time). Ensure support for returns processing and scalable labor plans for peaks.

Conduct on‑site audits of physical security, racking, and temperature control; run pilot shipments to test throughput and accuracy; evaluate IT connectivity and reporting; review KPIs and penalties in SLAs; and verify insurance, compliance, and cross‑border handling experience.