Activity Forums Salesforce® Discussions What is the difference between WhoId and WhatId?

  • Himanshu

    Member
    August 2, 2016 at 1:15 pm

    Hi Hazel,

    WhoID - refers to people things.Ex- Lead ID or a Contact ID
    WhatID- refers to object type things.Ex- Account ID or an Opportunity ID

  • Shaharyar

    Member
    August 29, 2017 at 5:26 am

    WhatId: ID of a related Account, Opportunity, Campaign, Case, or custom object. Labelis Opportunity/Account ID.
    WhoId: ID of a related Contact or Lead. If the WhoId refers to a lead, then the WhatId field must be empty. Label is Contact/Lead ID. If Shared Activities is enabled, this is the ID of a related Lead or primary Contact.

    whoid & whatid

  • shariq

    Member
    September 16, 2018 at 6:04 pm

    Hi,

    WhoID in Salesforce refers to people things. So that would be typically a Lead ID or a Contact ID. The WhoId represents a human such as a lead or a contact. WhoIds are polymorphic. Polymorphic means a WhoId is equivalent to a contact’s ID or a lead’s ID. The label is Name ID.

    WhatID in Salesforce refers to object type things. That would typically be an Account ID or an Opportunity ID. The WhatId represents nonhuman objects such as accounts, opportunities, campaigns, cases, or custom objects. WhatIds are polymorphic. Polymorphic means a WhatId is equivalent to the ID of a related object. The label is Related To ID.

    Hope this helps.

  • Parul

    Member
    September 19, 2018 at 12:15 pm

    Hi hazel,

    WhoId is used for LeadID or ContactId,Basically WhoID in Salesforce refers to people things.The WhoId represents a human such as a lead or a contact. WhoIds are polymorphic. Polymorphic means a WhoId is equivalent to a contact’s ID or a lead’s ID. The label is Name ID.

    WhoId is used for Account ID or Opportunity ID,Basically WhoID in Salesforce refers to Object things. The WhatId represents nonhuman objects such as accounts, opportunities, campaigns, cases, or custom objects. WhatIds are polymorphic. Polymorphic means a WhatId is equivalent to the ID of a related object. The label is Related To ID.

    Thanks

  • Avnish Yadav

    Member
    September 19, 2018 at 12:19 pm

    Hello,

    In simple Words, WhoId refers to the person while WhatId refers to Things in salesforce.

    Thanks.

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