ERP System: Enterprise Resource Planning system. Its mission is to manage internal enterprise resources (procurement, sales, inventory, finance, and logistics) from a holistic perspective, addressing the issues of IT infrastructure and standardized processes.

APS System: Advanced Planning and Scheduling System. Its mission is to formulate and optimize production plans, primarily responsible for production management, addressing issues of production sequencing, scheduling, and resource allocation.

ERP Planning Characteristics: Static, rough management. Based on infinite materials, infinite capacity calculations, fixed BOM, static routing, and manual decision-making.

APS Planning Characteristics: Dynamic, precise management. Based on constraint theory, finite capacity calculations, dynamic BOM, dynamic routing, and computer-automated computation and decision-making.

ERP System Advantages: It demonstrates high management efficiency and standardization in areas such as financial management, cost management, procurement management, sales management, inventory management, and human resource management, excluding production planning.

APS System Advantages: As a planning system, it effectively plans long-term, mid-term, and short-term plans based on the supply chain. By integrating with actual production under finite capacity constraints, it achieves efficient resource management and production scheduling.

In summary, the ERP Enterprise Resource Planning system and the APS Advanced Planning and Scheduling System have an integrated relationship. A standalone ERP system cannot meet the needs of smart manufacturing. The APS system complements and optimizes the ERP system, strengthening its planning capabilities without affecting other mature business processes. In customized enterprise ERP, APS can be used as a part of the enterprise ERP.