MRP has long been a core foundation in manufacturing management, particularly in ensuring the timely and adequate supply of raw materials. However, in operational practice, ensuring sufficient raw materials does not automatically guarantee the feasibility of production planning.

As production challenges become increasingly complex, businesses need not only to know what they need but also to understand whether they have the capacity to deliver. This is precisely the starting point for the shift from MRP to MRP II. In this article, Mr. Tran Quoc Hung (Senior Consultant for 1C:ERP Solution Implementation) will analyze this challenge in detail.

1. WHAT IS MRP? THE DEVELOPMENT FROM MRP I TO MRP II

Originally called Material Requirements Planning, MRP It was built with a core objective: to ensure sufficient raw materials for production, at the right time.

At MRP level I, the system focuses on:

• Calculate material requirements.
• Maintain and ensure adequate inventory levels.
• Ensure supply meets production targets.

With the basic input data including:

• Overall production plan.
• Inventory status.
• Bill of Materials (BOM).

However, in practical operation, the production problem doesn't stop at raw materials. With the development of computer science and the practical needs of complex manufacturing plants, businesses not only need to know what they need, but also need to answer:

• Do you have sufficient machinery, personnel, and production capacity to carry it out?
• Is that plan feasible in terms of capacity?
• When demand changes, can the system quickly and effectively reschedule?

This is precisely why MRP II (Manufacturing Resource Planning) was created. MRP II expands the scope from simple "material management" to encompass all manufacturing resources, including: machinery capacity, personnel, multi-stage production processes, historical data, and market demand. Businesses need to understand how much resources they need and when they need them to meet production demands.

2. MRP II - MANDATORY REQUIREMENT ON MANUFACTURING ERP SYSTEMS

From an ERP system perspective, MRP II is no longer a standalone module, but rather the core element coordinating production planning and execution. Beyond the material requirements addressed in MRP I, MRP II within the ERP system offers businesses benefits such as:

• Planning the organization's production resources (people, machinery, factories).
• Ability to simulate complex, multi-stage manufacturing processes.
• Utilize historical data and market demand.

MRP II involves not only the Production department, but also the Sales, Finance, Equipment departments, etc., helping businesses optimize their resource utilization.

• Optimizing the use of machinery and personnel: Given the projected number of FO orders from customers this year, does the company need to invest in additional machinery and equipment, or recruit more personnel?
• Production and inventory coordination and control: What periods are free, and can production plans be rebalanced to avoid overload?
• Easily adapt to order changes. Expected order quantities and actual monthly order quantities often fluctuate, so businesses need flexibility to develop appropriate plans.
• Minimize outsourcing and downtime: Balance production, shift overloaded stages to other stages.
• Understanding the financial aspects of planned and actual production: Comparing planned and actual production costs. Tracking budgets linked to sales, production, and purchasing.

Therefore, MRP II is an indispensable backbone in ERP systems for manufacturing businesses.

3. THE PRODUCTION-ON-DEMAND PROBLEM AND THE ROLE OF MRP II

To illustrate the role of MRP II in an ERP management system, let's look at a typical case study from a manufacturing company. Specifically, the company compiles the quantity of goods to be sold by item and time period from sales staff and distributors. This data is used to calculate production and material requirements and make decisions.

a. Create a Sales Plan

The sales plan is created based on actual and expected sales data.

In addition to actual historical sales data, data from sales plans can supplement expected growth rates when considering the figures in the sales plan.

b. Overall production plan

From the sales plan, businesses can calculate the overall production plan for the months. In addition to business needs, production managers can consider inventory production plans (balance plans) to ensure sufficient supply in case of increased demand. This leads to the creation of a Master Production Plan.

Multiple computational data sources can be added alongside the sales plan to ensure the overall production plan is responsive in case of unforeseen circumstances.

c. Assess resource needs

After developing an overall production plan, the final step a business needs to take is to assess its production resource requirements. Specifically, given the projected production volume, is additional machinery investment or staff recruitment necessary? Let's look at the example below.

In the two illustrations below, it can be seen that on some days, resource demand is exceeding the company's actual production capacity. This information in the report allows resource planners to adjust resource allocation plans, increase production shifts, or rebalance production quantities to ensure the company's actual production capacity is met. From there, as production activities unfold, the company can continuously measure and adjust its operations to align with the plan.

Points of production resource overload according to production plan.

Planned demand for various types of production resources

4. CONCLUSION

In an increasingly volatile and complex manufacturing environment, ERP is no longer just a data recording system; it must become a system that supports and automates operational decision-making for businesses.

And to achieve that, MRP II plays a crucial role in an ERP system. Through the example presented by expert Tran Quoc Hung, understanding the application rules and flexibly adapting them to the needs and problems of each business will help businesses use ERP more effectively.

If your manufacturing business needs digital transformation with a comprehensive ERP management solution, contact our experts HERE to share your management challenges.