i have a situation where I need to throw an error when any use tries to edit the master record. It has one or more child records associated with it.

  • i came up with something, like i had a roll-up summary for the master record which gives the count of the associated child records.
  • now I want to put a validation rule on the Master object using the Roll up summary field.
  • I am stuck with the validation rule part.

is it feasible this way, or a trigger is required ?


Both are viable options. for example

  • for validation rule

    myRollupField__c > 0
  • for trigger

    trigger myTrigger (before update){
        for (SObject obj : Trigger.new){
            if (obj.get('myRollupField__c') > 0){
| improve this answer | |

about the validation you provided: in that case, when ever you try to add a child record the error throws up. the error needs to pop up only when you try to edit or change the master record.

i got it resolved

AND(myRollupField__c > 0,ISCHANGED(the field you want not get edited in the masterobject))

| improve this answer | |
  • sorry if my question wasnt clear enough. – user7149 Mar 4 '14 at 15:48

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