OPTIMALISASI MANAJEMEN PERSEDIAAN BAHAN BAKU DENGAN REORDER POINT DAN SAFETY STOCK BERBASIS SERVICE LEVEL APPROACH TERINTEGRASI ANALASIS ABC – XYZ (Studi kasus: PT Eureeka Great Nusantara)

Effective raw material inventory management plays a crucial role in ensuring smooth production processes while minimizing inventory costs. Demand uncertainty and differences in raw material characteristics may lead to stock shortages or excess inventory, which can negatively affect a company's operational efficiency. This study aims to optimize raw material inventory management through the implementation of safety stock and reorder point methods based on a service level approach integrated with ABC–XYZ analysis. This approach enables the application of differentiated inventory policies for each raw material group according to its level of importance and demand variability. The research was conducted through raw material classification using ABC–XYZ analysis, determination of inventory parameters, and evaluation of system performance through simulation. The integration of ABC–XYZ analysis was used to adjust inventory levels based on the consumption value and demand variability of each raw material. The results indicate that the proposed model is capable of reducing total inventory costs while minimizing the risks of stockout and overstock compared with the company's current conditions. Therefore, the proposed model can serve as a more effective and efficient inventory control strategy to support operational performance improvement.