Currently, NetSuite does not record any changes made to the Meta Tag HTML field in the Item Record. A workaround that the user can perform is to create a Custom Field that serves as a placeholder to record all changes made in the System Notes. And a Workflow that will copy the contents from the Standard Meta Tag HTML field and place it on the Custom Field.
To create a Custom Field in the Item Record:
1. Navigate to Customization > Lists, Records & Fields > Item Fields > New
2. Enter a Label (e.g. Meta Tag HTML v2)
3. Store Value = T
4. Type = Text Area
5. Select all Item Types that will be applied by this field under the Applies To tab
6. Select Main under the Subtab dropdown field under the Display tab
7. Change the Display Type to Hidden
8. Click Save
To create the Workflow:
1. Navigate to Customization > Workflow > Workflows > New
2. Enter a Label
3. Record Type = Item
4. Select All Subtypes
5. Execute as Admin = T
6. Release Status = Testing
7. Enable Logging = T
8. On Event Definition, select On Create and On View or Update
9. Click Save
10. Click New Action
11. Select Set Field Value
12. Select Trigger On = After Record Submit
13. Select All Event Types
14. Select All Contexts
15. Under the Parameters section, select the custom field
Meta Tag HTML v2 in the Field
16. Under Value, select Formula = enter {metataghtml}
17. Click Save