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Understanding the "Check-Avail. Period Calc." Field in Microsoft Dynamics 365 Business Central

Jun Wang Profile Picture Jun Wang 5,088 Super User


Understanding the "Check-Avail. Period Calc." Field in Microsoft Dynamics 365 Business Central

In the world of inventory management and sales planning, ensuring the availability of products is crucial to maintaining smooth operations and satisfying customer demands. Microsoft Dynamics 365 Business Central provides various tools and fields to aid in this process, one of which is the "Check-Avail. Period Calc." field. This field plays a significant role in how businesses manage and forecast their inventory needs relative to customer orders and demand.

What is the "Check-Avail. Period Calc." Field?

The "Check-Avail. Period Calc." field in Business Central is a configuration setting that helps companies determine how far ahead they should check the availability of items when planning shipments. This field is typically found in the company or inventory setup pages, and it specifies a date formula that affects inventory and sales order processing.

Functionality and Importance

  • Date Formula: This field accepts a date formula, such as '90D', which stands for 90 days. This formula tells Business Central's system to check the availability of an item for the next 90 days from the planned shipment date whenever a sales order is processed.

  • Impact on Sales and Inventory: By setting this period, businesses can proactively manage their inventory to ensure that they can meet anticipated sales demand without overstocking. For instance, if an item is frequently ordered and has a lead time of 30 days, setting a check availability period of 90 days helps ensure that the item will be available when needed, while also considering any lead time for restocking.

Practical Use Case

Consider a business that sells bicycles, which are in high demand during the summer season. By setting the "Check-Avail. Period Calc." to '90D', the business can:

  • Ensure that anticipated demand for bicycles over the next three months is met.
  • Adjust purchasing or manufacturing schedules based on the availability forecast provided by the system for the next 90 days.
  • Avoid potential stockouts during peak season by having a forward-looking view of inventory needs.

Configuring the Field

Setting up the "Check-Avail. Period Calc." field is straightforward:

  1. Navigate to the Company Information page.
  2. Locate the "Check-Avail. Period Calc." field.
  3. Enter a date formula based on your business's specific needs for checking item availability.
  4. Save the changes to ensure that the system begins using this new setting for future sales order processing.


The "Check-Avail. Period Calc." field is a powerful tool in Microsoft Dynamics 365 Business Central that supports better inventory management and customer service. By allowing businesses to define how far in advance to check product availability, it helps in optimizing inventory levels, reducing carrying costs, and enhancing service levels. Whether your business deals in seasonal products, fast-moving consumer goods, or specialized industrial equipment, setting an appropriate availability check period is crucial for meeting your customers' needs efficiently and effectively.


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