I'm new to developing in general and am trying to create a trigger that updates the custom lookup field Market_lookup__c with the value selected in the field Market_picklist__c. Both fields reside in the standard Opportunity object, and the Market_lookup__c field points to the standard Account object. What I came up with is:
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trigger OpptyMktTrigger on Opportunity (before insert, before update) { for (Opportunity a: Trigger.new) a.Market_lookup__c = a.Market_picklist__c; }
But running this trigger returns the error: OpptyMktTrigger: execution of BeforeUpdate caused by: System.StringException: Invalid id: Market 1: Trigger.OpptyMktTrigger: line 3, column 1
I'm new to developing in general and am trying to create a trigger that updates the custom lookup field Market_lookup__c with the value selected in the field Market_picklist__c. Both fields reside in the standard Opportunity object, and the Market_lookup__c field points to the standard Account object. What I came up with is:
1 2 3 4
trigger OpptyMktTrigger on Opportunity (before insert, before update) { for (Opportunity a: Trigger.new) a.Market_lookup__c = a.Market_picklist__c; }
But running this trigger returns the error: OpptyMktTrigger: execution of BeforeUpdate caused by: System.StringException: Invalid id: Market 1: Trigger.OpptyMktTrigger: line 3, column 1
