Sales Inventory Operations Planning | 2 mins read

Sales, Inventory & Operations Planning- What is it?

sales inventory operations planning what is it
Chloe Henderson

By Chloe Henderson

At any given time within a manufacturing business, several plans are being executed simultaneously. This requires extensive logistics and collaboration between all departments to pull off.

By conducting sales, inventory, and operations planning, companies can gain better insight into data from various processes to enhance strategies and decision-making. With participation from each department, businesses can gauge what resources, skills, and funds they can invest in their projects.

What is Sales, Inventory, and Operations Planning?

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Sales inventory operations planning (SIOP) is a management process that enables businesses to efficiently coordinate supply and demand. This process is typically updated monthly or on a more frequent schedule to promote the organization's operating plan.

By balancing the supply and demand for each product line, companies can avoid stockouts, promote sales, and progress toward goals.

In order to conduct accurate SIOP, organizations need to enhance communication between their sales, marketing, and finance departments. SIOP managers must gather data on sales, production, internal operations, inventory, and product development to create a strategic plan of action. This gives management insight into what resources are available and how the company's performance compares to forecasts.

If available resources are insufficient to run operations, SIOP ensures there is enough time to find vendors and source materials to avoid disruptions.

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When done correctly, SIOP enhances a company's inventory replenishment control and profitability strategies. It can also be used alongside capacity planning to establish production benchmarks and optimize stock levels.

Another benefit of SIOP is that it enhances a business's strategic planning, as it requires management to ask vital questions, including-

1. What products and services does the business offer?

2. Who are the customers, and what market is the company in?

3. What resources are needed?

4. How will performance be measured?


5. What is the financial strategy and objective?

When businesses can harness the power of SIOP, they gain competitive advantages such as-

  • Reduced Costs
  • Consistent Performance
  • Increased Profits
  • Enhanced Customer Service

Objectives of Sales, Inventory, and Operations Planning

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SIOP is a multifaceted process that can be tailored to help companies meet their specific goals. Many businesses also use SIOP to-

  • Measure the Business Plan
SIOP determines whether a company's existing operations and sales plans are in line to meet their financial expectations.

By conducting monthly reviews on the market and industry, businesses can accurately update their operation plans to meet goals. This creates flexibility, which allows organizations to adapt to fluctuating market trends.

  • Ensure the Plan is Realistic
Directors from each department, such as finance, sales, and human resources, need to collaborate to establish realistic plans to meet demand. This equal exchange of information enables stakeholders to evaluate the company's resources and capabilities, promoting data-driven decision making.

  • Effectively Manage Change
Companies that practice SIOP show that they are capable of managing their internal systems and making appropriate adjustments. This enables businesses to make quick decisions to resolve issues immediately.

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  • Manage Inventory and Customer Service
Accurate SIOP ensures businesses maintain optimal levels of finished goods to avoid stockouts. Overstocking inventory can result in excessive expenses, such as increased storage, shipping, and carrying fees. On the other hand, understocking merchandise can result in backorders and lost sales.

By controlling backlogs, businesses can trigger production based on requests, enhancing customer service. However, managers must find a balance between overextending and neglecting the backlog.

When backorders pile up, delivery times are elongated, causing customers to take their business elsewhere, whereas insufficient backlogging can increase operating costs.

  • Measure Performance
With SIOP, management can accurately assess their performance to detect when they deviate from their plan of action.

When there are discrepancies between the actual and expected performances, managers need to determine if the cause was within or out of their control. Out-of-control occurrences may require adjustments to the original plan, while human errors can be corrected by reevaluating the performance.

  • Promote Teamwork
Since SIOP requires a collaborative effort from several departments, different employees get the chance to speak with one another and participate in the planning process.

Each representative gets to showcase their experience, skills, and knowledge to add valuable insights to the plan. This gives everyone a chance to be heard and an opportunity to learn from their peers.

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Different Approaches to SIOP

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Although companies can tailor their SIOP processes to fit their particular needs, most businesses keep a monthly schedule with a long-term planning goal of up to 36 months.

The process should tie in with other business plans, which are regularly reviewed to ensure all are in alignment. This typically calls for weekly updates to prepare for the larger monthly SIOP meeting where the actual discussion is held.

During the meetings, department representatives evaluate different strategies, including-

  • Sales
  • Production
  • Human Resources
  • Marketing
  • Engineering
  • Product Development
  • Financial Plans
  • Inventory
  • Backlog

Other businesses prefer using top-down or bottom-up planning methods. Top-down planning uses a sole sales forecast to base tactics and resource usage. On the other hand, the bottom-up strategy is often used when the manufacturing schedule is not reliable. Instead of relying on a sales forecast, the business focuses on what resources are needed to produce different goods.

Once the company chooses its SIOP approach, management can solidify the manufacturing plans, which are categorized as level, chased, or mixed.

Level means that production provides a consistent yield, promoting cost-efficiency and maintaining healthy stock levels. Chased means that production is always chasing the demand as it comes and is often used when storage cost for a particular item is high. Mixed manufacturing requires a custom plan to capitalize on the company's advantages to streamline different operations.

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