Map Custom Lead Fields for Lead Conversion #inSalesforce

You know that the information from the standard lead fields appears in standard fields for contact, account, and opportunity records.

Similarly, if you set up custom lead fields, you specify how that custom information converts to custom fields in accounts, contacts, and opportunities.

Steps:

Object Management | leads | Fields section | click Map Lead Fields  Here for each custom lead field, choose a custom account, contact, or opportunity field into which you want the information inserted when you convert a lead | Save

Also refer - https://thesalesforcetutorial.blogspot.com/2022/10/lead-conversion-insalesforce.html

Reference: https://help.salesforce.com/s/articleView?id=sf.customize_mapleads.htm&type=5