Activity › Forums › Salesforce® Discussions › Which fields cannot be added as a custom Index in Salesforce? Tagged: Multi-Currency Organization, Multi-Select Picklist, Salesforce Custom Index Salesforce® Discussions Which fields cannot be added as a custom Index in Salesforce? Posted by Saurabh on May 5, 2017 at 1:51 PM Which fields cannot be added as a custom Index in Salesforce? Manpreet replied 7 years, 5 months ago 2 Members · 1 Reply Multi-Currency OrganizationMulti-Select PicklistSalesforce Custom Index 1 Reply Manpreet Member May 9, 2017 at 1:10 PM Hi saurabh, A Custom Index can’t be created on these types of fields: Multi-select Picklists. Currency fields in a Multicurrency Organization. Long text fields. Binary fields (fields of type blob, file, or encrypted text.). Thanks. Log In to reply. Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me