How to map lead fields to Account, Contact and Opportunity while converting leads in Salesforce? December 11, 2014June 9, 2022InfallibleTechie Admin Salesforce Lightning Experience: 1. Go to Setup. 2. Select Object Manager. 3. Select Lead object. 4. Select Fields & Relationships. 5. Click “Map Lead Fields”. 6. Select the fields to Map. Salesforce Classic: 1. Go to Setup –> Customize –> Leads –> Fields. 2. Click “Map Lead Fields” button. 3. After mapping, click “Save” button.