oboloo Articles

What is Material Requirements Planning (MRP)? Definition

What is Material Requirements Planning (MRP)? Definition

oboloo Articles

What is Material Requirements Planning (MRP)? Definition

What is Material Requirements Planning (MRP)? Definition

What is Material Requirements Planning (MRP)? Definition

What is Material Requirements Planning (MRP)? Definition

In business and manufacturing, the term “material requirements planning” (MRP) is used to describe a software-based system that helps managers track and schedule production based on customer demand. The goal of MRP is to ensure that all materials and components needed for production are available when they are needed, in the correct quantities. This can be a challenging task, especially in businesses with complex supply chains. In this article, we will provide a basic definition of MRP and how it works. We will also discuss some of the benefits and challenges associated with using this type of system.

What is MRP?

In order to understand MRP, it is necessary to first understand what is meant by the term “materials.” Materials are anything that is used in the production of a product or service. This includes raw materials, like wood or metal, as well as components and finished goods.

The term “requirements” refers to the amount of materials needed to produce a product or service. In other words, requirements are the quantities of materials that must be available in order to make something.

Finally, “planning” simply refers to the process of creating a plan. In this case, the plan is for how much of each material will be required in order to meet customer demand.

Thus, MRP can be defined as a system that uses information about customer demand and forecasted production plans in order to determine the optimal quantities of materials to procure and produce. MRP systems help businesses minimize inventory costs while ensuring that customer demand can always be met.

What is the History of MRP?

The history of MRP begins in the early 1970s with the development of early inventory management systems. These systems were designed to help businesses keep track of their inventory and manage their production processes. However, these early systems were limited in their ability to plan for future demand and optimize production schedules.

In 1974, a team of researchers at MIT developed a new system called Materials Requirements Planning (MRP). This system was designed to improve upon the limitations of the earlier inventory management systems. MRP II, an improved version of the original system, was developed in the 1980s.

Since its inception, MRP has been continuously evolving and improving. Today, it is an essential tool for businesses that manufacture or assemble products. MRP helps businesses plan their production schedules, optimize their use of resources, and reduce their overall costs.

How does MRP Work?

Material requirements planning (MRP) is a computer-based inventory management system that determines the materials and components needed to manufacture a product. MRP systems are used by companies to manage inventory and production planning.

An MRP system starts with a bill of materials (BOM), which lists all of the raw materials, components, and sub-assemblies required to manufacture a product. The BOM also includes information on lead times, lot sizes, and safety stock levels. Once the BOM is entered into the MRP system, the system can generate a master production schedule (MPS).

The MPS tells you how much of each product needs to be produced and when it needs to be produced. It takes into account the lead times of the raw materials and components, as well as any scheduled production downtime. The MPS is used to create a production plan, which tells you what needs to be produced, when it needs to be produced, and how much needs to be produced.

The production plan is then used to create detailed work orders for each step in the manufacturing process. These work orders are assigned to specific machines or workers, and they detail the exact materials and components that need to be used. Work orders are typically generated for one week at a time.

As products are completed, they are removed from the MRP system. This lets the system know that the finished products are available for shipping or sale. If there are any

What are the Benefits of MRP?

Material requirements planning (MRP) is a production planning, scheduling, and inventory control system used to manage manufacturing processes. Most MRP systems are software-based, and can be used to plan production for both discrete and process manufacturing.

An MRP system integrates information from various sources within the organization, such as sales orders, marketing forecasts, product plans, inventory data, and production schedules. This information is used to generate a master production schedule (MPS), which indicates when each individual product or component should be produced. The MPS is then used to generate a detailed material requirements list (MRL), which specifies the raw materials, components, and subassemblies needed to produce the products in the MPS.

The benefits of MRP include improved communication between departments, reduced lead times, improved inventory management, and increased visibility into the manufacturing process. Additionally, MRP can help reduce costs by reducing waste and scrap, improving utilization of resources, and reducing inventory levels.

What are the Drawbacks of MRP?

Discrepancies in demand forecasting: Inaccurate demand forecasting is the root cause of most MRP problems. Poor demand forecasts lead to inaccurate production plans, which can disrupt the entire manufacturing process.

Inventory management issues: Another common issue with MRP is ineffective inventory management. If inventory levels are not properly maintained, it can lead to shortages of raw materials or finished goods. This can result in production delays and lost sales.

Complexity: MRP can be a complex system to implement and manage. It requires accurate data and careful planning to ensure that all components of the manufacturing process are coordinated correctly.

Inflexibility: Once an MRP system is in place, it can be inflexible and difficult to change. This can make it challenging to respond quickly to changes in demand or production plans.


MRP is a system that helps businesses plan for the materials they need to create their products. This system ensures that businesses have the right materials on hand when they need them, and it can help businesses avoid costly delays or disruptions in their production process. While MRP can be complex, its benefits can be invaluable to businesses of all sizes.

What is Material Requirements Planning (MRP)? Definition