Using Field IDs as placeholder to use on another Custom Field's default value.

1. Navigate to Customization > Lists, Records, & Fields > Item Fields > New.

2. Enter Field Label (Example: Other Item Description)

3. Set Store Value = F.

4. Set Type = Free-Form Text.

5. In the Applies To tab mark Inventory Item

6. In the Display subtab > Subtab field, select Main.

7. Set the Display Type to Inline Text.

8. In the Validation & Defaulting tab, set Default Value similar to the following:

'This item was purchased at ' || {cost} || ' and is manufactured by ' || {manufacturer} || '.'

Note:  Do not mark the Formula check box.

9. Click Save.

When viewing the item record, the field value will display as: This item was purchased at 10.00 and is manufactured by ABC Company.