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I have a Lead and a custom object called Social Account (API Name = Social_Account__c).

I have set a relationship as follows: Lead is a parent of Social Accounts. So a lead has many social accounts.

In the Social Account, I made a custom field named Lead (Data Type: Lookup) to make the relationship.

and here is a lookup detail:

API Name: Lead__c

Related to Lead

Child Relationship Name: Social_Accounts

Related List Label: Social Accounts

I would like to add new social accounts to existing lead if there is a lead with the same email address.

Social_Account__c social_account = new Social_Account__c();

/*add whatever fields on social_account*/

List<Lead> leads =[select Id from Lead where Email =:emailAddress ];


    Lead existing_lead = new Lead(Id = leads[0].id);

    //ideally i would like to do something like this =; //this is where I get an error from

    insert social_account;

    update existing_lead;


But I get the following error message:

Error: Compile Error: Invalid foreign key relationship: Social_Account_c.Lead_c

what am I doing wrong? I would appreciate any suggestions.


1 Answer

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by (32.1k points)

You can't "go through relation" with dot (.) operator with updates, with just reading data.

Change = existing_lead.Id; to social_account.Lead__c = existing_lead.Id;

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