Skip to content

Managing Inventory Periods in Microsoft Dynamics NAV

ArcherPoint How-To Blog: Step-by-step instructions on how to perform specific tasks in Microsoft Dynamics NAV

Inventory periods are used to manage posting of inventory adjusting entries. Adjusting entries will post in the period the original transaction unless inventory periods are closed on a monthly basis. Creating and closing inventory periods will prevent the inventory adjustments from posting in that period. If the posting date of the original transaction is in a closed inventory period then the value of the adjustments post on the first day of the first open inventory period. This makes sure that the G/L value of inventory, expenses, and cost of goods sold do not change once the financial statements have been printed for a month.

Creating Inventory Periods

Inventory Periods can be accessed from multiple places. How to access depends on what makes the most sense to the user. The section below shows various ways to access the Inventory Period page.

Accounting Periods

Many companies manage the inventory periods at the same time they manage their accounting periods. To access Inventory Periods from the Accounting Period Page process the steps below:

Open the Accounting Period Page by following the link below:

Departments -> Financial Management -> Periodic Activities -> Fiscal Year -> Accounting Periods

View of Microsoft Dynamics NAV Accounting Periods page; Inventory Period icon highlighted

Figure 1 – View of Microsoft Dynamics NAV Accounting Periods page; Inventory Period icon highlighted

Select the Inventory Period icon on the ribbon.

Direct Access

Inventory Periods can be accessed directly without accessing through Accounting Periods. This can be accomplished by accessing the link below:

Departments -> Financial Management -> Inventory

The Inventory Periods page can also be accessed directly from Departments -> Financial Management -> Inventory

Figure 2 – The Inventory Periods page can also be accessed directly from Departments -> Financial Management -> Inventory

Adding Inventory Periods

Inventory periods are added by creating new records in the Inventory Period table. The periods can be added as needed or added with dates out into the future. Inventory Periods are created by adding the ending date for each period. An inventory period is defined by the time period between the ending dates. The screen shot below shows inventory periods that have been defined. Define more inventory periods by adding additional end dates in the Inventory Period table.

Inventory Periods table showing some inventory periods have already been defined

Figure 3 – Inventory Periods table showing some inventory periods have already been defined

NOTE: Note that the inventory period is closed if a Close flag has a check mark in the close column.

Closing Inventory Periods

The inventory period must be closed to prevent adjusting entries from posting to the period once the inventory period is closed. Because of this, NAV requires that all outbound transactions (transactions that reduce inventory levels) must have already been applied. If there are any unapplied outbound transactions, then NAV will not allow the Inventory Period to be closed. This also means that adjust cost entries must be run before closing the inventory period.

The following are the steps required to close the inventory period:

  1. Run Adjust Cost Entries
  2. Run Post Cost to G/L
  3. Run the Test Report.
    • The test report checks to see if there are any unadjusted or open outbound transactions. The report below shows an example of the type of errors that are found by this report.
  4. Run the “Close Period” Function.

Errors found by running the Test Report

Figure 4 – Errors found by running the Test Report

Once the sequence outlined above has been completed, the inventory period will be set to close and no further transactions or adjustments can post to that inventory period.

Correcting Errors

Errors identified by the test report must be corrected before the Close Period can be run. Methods to fix the errors are listed below.

Entries in This Period Have Not Been Adjusted

This error indicates that the “Adjust Cost Entries” and “Post To G/L” has not been run. Adjust Cost Entry can be run from the Inventory Period ribbon.

View of the Inventory Periods window with the Adjust Cost - Item Entries action highlighted

Figure 5 – View of the Inventory Periods window with the Adjust Cost – Item Entries action highlighted

Item Ledger Entry XXX is Open

This error indicates that there is an open outbound transaction. This means that inventory has been driven negative for that item. Inventory must be adjusted into inventory in the location associated with that transaction.

Reopening an Inventory Period

There are occasions where an inventory period must be reopened to correct an inventory issue. This can be can be performed by running the Open Period function. The inventory period can be opened so that inventory transactions can be processed. The inventory period can be closed again once the inventory transactions have been processed and adjust cost entry has been run.

If you would like more information on this subject or another Dynamics NAV subject, please contact ArcherPoint.

Read more "How To" blogs from ArcherPoint for practical advice on using Microsoft Dynamics NAV.

Blog Tags: 
Read ArcherPoint's Blog Follow us on Twitter Follow us on Facebook Follow us on LinkedIn Link to our RSS feed Join us on Google+ Watch us on YouTube
Get Help Now