This setting won't delete any existing supplier CRM records, but will prevent new supplier CRM records being created when new suppliers are added to your integrated ERP/Accounting/Inventory Management system.
Prerequisites
You'll need CRM Admin rights to enable/disable this feature
Step 1: Go to System Settings
In the navigation menu, go to 'Settings' then select 'System Settings'.
In the search bar, search for either "Suppliers' or 'CRM records", then scroll until you see the option "Automatically create CRM records for Suppliers".
Step 2: Disable Setting
By default, the setting is set to 'Enable'. Select 'Disable' to prevent the creation of new supplier Company/Contact records in Prospect CRM when new suppliers are found in your integrated back-office system.