Inventory ID Segmented Key Error

​@mbillnz This AI generated answer hope it’s useful

• Go to:

  • Screen: Inventory → Inventory → Manage → Stock Items

  • Search for "<N/A>" in the Inventory ID field.

• Edit the <N/A> record:

  • Change its Inventory ID temporarily to something shorter, for example:
    NA or XX.

• Save the record.

• Now go back to:

  • Screen: System Management → Configuration → Segmented Keys

  • Select INVENTORY.

• Try reducing the segment length again (e.g., make “Brand” length 2).

• Once the change is saved successfully,

  • Go back to Stock Items and rename the item back to <N/A> if needed.

Thanks. There are no Inventory Items set up yet, so searching for "<N/A>" returns nothing.

​@mbillnz 

Option 1: Safest fix — recreate the Inventory segmented key

Since you have no items created yet, the cleanest and safest method is to delete and recreate the INVENTORY segmented key:

1. Go to System Management → Configuration → Segmented Keys.

2. Locate and delete the INVENTORY key (trash-can icon).

   • Acumatica will warn you, but since there are no items, it’s safe.

3. Recreate a new key:

   • Segmented Key ID: INVENTORY

   • Description: Inventory ID

   • Add your 5 segments with the desired lengths (e.g. Brand = 2, etc.).

4. Save.

This forces Acumatica to rebuild the default <N/A> record with your new segmentation setup — and resolves the error completely.

Option 2: Fix the existing <N/A> record (if you can’t delete the key)

If deleting isn’t allowed:

1. Go to Configuration → Segmented Keys for INVENTORY.

2. Increase the total length temporarily (for example, to 30).

   • Save the record.

3. Now go to Configuration → Data Views → Generic Inquiry, and create a quick GI on the INItem table to locate the <N/A> record:

   • Table: INItem

   • Fields: InventoryCD, InventoryID

   • Filter: InventoryCD = <N/A>

4. Once you find it, open it in Stock Items via the hyperlink (or note its ID and open it manually) and rename <N/A> to NA.

5. Return to Segmented Keys and now reduce the length as desired.

6. Rename NA back to <N/A> later if you wish.

Option 3: Use SQL (sandbox only!)

If you’re in a test environment and have DB access:

UPDATE INItem SET InventoryCD = 'NA' WHERE InventoryCD = '<N/A>';

Acumatica automatically inserts <N/A> as a default “null” inventory ID, so it still validates its length even though it’s not user-visible until you start using inventory.

Hi ​@mbillnz 

Were you able to find a solution for this? 
I’m currently experiencing the same dilemma.