Copy of Snippet "Source Detail"

Creating a new Source Detail for leads from a partner called [Source Detail Name] to [Country] Records.
[Country] Sales is working with a new partner called [Source Detail Name] and would like to appropriately tag these leads with the source detail.
*Technical Details
New picklist values:
Lead.Source_Detail_c "Source Detail Name"
Campaign.Sub_Source_c "Source Detail Name"
Contact.Source_Detail_c "Source Detail Name"
Updated dependencies
Lead: LeadSource to Source_Detail_c - add "Source Detail Name" under "[Externally/Internally] Sourced"