Material Requirements Planning in precision components and electronics manufacturing | Part 2 of 3
In Part 1, we examined how the Material Requirements Planning (MRP) Controller translates demand into material and manufacturing requirements in precision components and electronics manufacturing. In Part 2, we look at the wider network of Sales, Purchasing, Warehouse, Planning, Scheduling, and Production that contributes information to the planning process.
The shortage that should not exist
It is Tuesday morning. Production is scheduled to begin later in the day. The customer order is confirmed. The job is ready. The required materials appear to be available.
Then Warehouse reports a problem. A critical component cannot be found.
The inventory record shows stock on hand. Production expects to use it. Purchasing believes sufficient supply exists. The manufacturing plan has been built on the assumption that the component is ready. Yet it is unavailable.
Warehouse checks bins and staging areas. Planning reviews allocations. Purchasing investigates incoming supply. Production waits while the business attempts to establish what has happened.
The immediate problem is that Production cannot access the material it expects to use. The deeper problem is that the inventory information used to support planning does not reflect what is actually available.
Effective planning is a team effort
Effective planning requires information from across the business.
Customer demand is understood through Sales. Incoming supply is managed through Purchasing. Physical stock is handled by Warehouse. Manufacturing requirements become jobs through Planning. Those jobs are placed in time through Scheduling. Actual progress and consumption are reported by Production.
The MRP Controller plays an important role in maintaining material visibility and identifying requirements. Effective planning relies on several teams contributing reliable information while there is still time to influence decisions and protect customer commitments.
Sales forecasts contribute to the demand picture
The business’s understanding of future demand is based on the best information currently available. That understanding may include confirmed orders, forecast quantities, requested dates, expected projects, changing priorities, and significant sales opportunities. Some requirements relate to work that is already committed. Others represent demand that may develop over time or be satisfied from stock.
Neither category remains fixed. Customers change quantities. Projects move. Opportunities become more or less likely. Orders arrive earlier or later than expected. A forecast that previously appeared reasonable may no longer reflect the latest customer conversation.
Material Requirements Planning does not require Sales to predict the future perfectly. No one can. What matters is that meaningful changes become visible while Purchasing, Planning, and Production still have time to respond.
An increase in expected demand may bring forward the need for a semiconductor that is shared across several product lines. A delayed project may leave the business committed to stock that is no longer required at the same time. A new customer order may compete with make-to-stock production that is already in the plan.
When important demand information remains in an individual conversation, inbox, spreadsheet, or report, other teams may continue making decisions based on information that is no longer current. The challenge is not the lack of information, but ensuring that the people who need it can see it in time to act.
Purchasing provides visibility of future supply
Inventory on hand is only one part of the supply position. Material availability may also depend on components that have been ordered but not yet received.
A purchase order with an expected date does not make the supply risk disappear.
A supplier may revise a commitment. A partial shipment may arrive. Transport, inspection, or external processing may affect when the material can actually be used. In other words, a component may arrive as expected but still require additional steps before it can be used in production.
Purchasing provides Planning with information about incoming supply. When supplier commitments change, that information can affect several downstream decisions. A job may need to move. Available stock may need to be reallocated. Another purchase requirement may become more urgent. Sales may need to reconsider a customer commitment.
The relationship also works in the other direction. When future requirements and priorities are visible, buyers are better placed to distinguish genuine supply risks from requests created by incomplete information or changing requirements.
Purchasing keeps Planning informed about supply, while Planning helps Purchasing understand which requirements and commitments need attention first.
Warehouse maintains the physical inventory position
Inventory records describe what should be available. Warehouse manages what is actually available. Keeping those two aligned requires effective warehouse processes and helps ensure that planning decisions are based on accurate information.
Materials are received, inspected, stored, transferred, allocated, picked, staged, issued, and consumed. Some stock may leave the business temporarily for external processing. Some may be physically close to Production but already committed to a particular job.
Every inventory transaction can affect material availability. A component allocated to one requirement should not appear freely available for another. Material moving between locations or awaiting inspection may belong to the business without yet being ready to use. Consumption must be recorded promptly so that future material requirements do not rely on stock that has already been used.
Warehouse manages the physical movement and availability of inventory, while the MRP Controller uses that information to assess future material requirements. Both roles help ensure that material is available when and where it is needed, while helping the wider business understand what stock can actually be used to meet current and future requirements.
Planning and Scheduling determine what is achievable
Planning works with customer demand from make-to-order production and replenishment demand from make-to-stock production.
Once demand and material requirements are understood, Planning converts those requirements into manufacturing jobs with the appropriate quantities, materials, dates, and priorities.
The Planner must consider several factors. Jobs require appropriate dates, complete material requirements, and a clear relationship to the demand they are intended to satisfy. They must also fit within the broader production programme.
Planning determines what work should be in the workstream. Scheduling determines when that work can realistically be completed. Both functions must balance demand, material availability, production priorities, capacity, and operational constraints.
Scheduling manages time and capacity. Customer orders, replenishment jobs, and branch requirements may all compete for the same resources. A necessary work centre may already be committed. Moving one activity may alter the timing of several others. A supplier delay may leave capacity reserved for work that cannot begin, while another viable job waits.
Together, Planning and Scheduling determine whether customer and replenishment requirements can be achieved within the available materials, resources, and capacity.
Production provides operational feedback
Once manufacturing begins, a new source of planning information emerges. Jobs may run ahead of schedule or fall behind. Material usage may differ from expectation. A quality issue may affect usable output. A manufactured component may be damaged. Equipment may break down. An operation may take longer than its planned duration.
These events can change the future supply position, available capacity, and the customer commitments that depend on them.
Planning and Scheduling need accurate progress information to understand whether upcoming work can proceed as expected. Warehouse needs visibility of actual material usage and revised timing requirements. Sales may need to know when a customer commitment requires attention.
Production does more than carry out manufacturing work. It provides the information that helps the business understand whether customer commitments, material availability, and production priorities remain achievable.
When teams work from the same information
Many apparent planning problems are not caused by a lack of effort or capability. They can arise when different teams are working from different information, or when important updates do not reach the people who need them in time to influence decisions.
When functional decisions remain isolated, teams can spend significant time identifying discrepancies and reconciling information before they can decide what to do next.
When those decisions contribute to one connected process, the business gains a more accurate and timely understanding of demand, supply, inventory, capacity, and production.
The purpose is not to automate every decision or remove local expertise. It is to ensure that one team’s actions can inform the decisions being made elsewhere.
Abel ERP connects forecasting, purchasing, inventory management, warehousing, manufacturing, and scheduling within a shared operational environment. This can reduce the effort required to reconcile separate sources and help teams make decisions from the same operational picture.
Continue the series
When Sales, Purchasing, Warehouse, Planning, Scheduling, Production, and the MRP Controller share reliable information, planning decisions can be made with greater confidence.
In Part 3, we explore that future state: risks becoming visible earlier, customer commitments being assessed against real constraints, and operational conversations moving from fact-finding to decision-making.
Learn more about Abel ERP for Precision Components and Electronics.
Talk to Abel about improving the flow of information between Sales, Purchasing, Warehouse, Manufacturing, Planning, and Scheduling.
