Getting "Inventory tracking cannot be enabled or disabled for items that have transactions." on items on Zoho. How do I track inventory on items that have already been added?

Getting "Inventory tracking cannot be enabled or disabled for items that have transactions." on items on Zoho. How do I track inventory on items that have already been added?

I want to track inventory for some items which were added earlier and orders have been placed for them. Whenever I click on "Track Inventory" I get the error - "Inventory tracking cannot be enabled or disabled for items that have transactions.". How do I get past this?
    Zoho Marketing Automation
      Zoho Mail - CRM Integration
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