function readOnly(count){ }
Starting November 20, the site will be set to read-only. On December 4, 2023,
forum discussions will move to the Trailblazer Community.
+ Start a Discussion
ViciaVicia 

System.FinalException: SObject row does not allow errors

trigger OnAccount_ConfirmToChange on Account (before update) {
  List<Account> accList = [select Id,Name,(select AccountId,Name from Contacts) from account where Id =                 :Trigger.newMap.keySet()];
// Map<Id,Contact> conMap = new Map<Id,Contact>([select Id from Contact where AccountId in: accList.Id]);
List<Contact> conList = [select Name,isAccountChanged__c from Contact where AccountId in: accList];
for(Account acc:accList){
for(Contact con:conList){
if(conList.size() > 0){
if(con.isAccountChanged__c == false){
Account ar = Trigger.oldMap.get(acc.Id);
ar.addError('Only if the isAccountChanged is checked,You can modify the account!');
}
}
}
}
}

Mariappan PerumalMariappan Perumal
Hi
I think , this is how you cant do  ,The problematic area is
List<Contact> conList = [select Name,isAccountChanged__c from Contact where AccountId in: accList];
acclist is the list of account (records) so it can't be used AccountId in acclist .

Moreover this conlist is not needed since those records are already there in acclist

Change as like this and give a try :
trigger OnAccount_ConfirmToChange on Account (before update) {
 List<Account> accList = [select Id,Name,(select AccountId,Name from Contacts) from account where Id = :Trigger.newMap.keySet()];
for(Account acc:accList){
for(Contact con:acc.conList){
if(conList.size() > 0){
if(con.isAccountChanged__c == false){
Account ar = Trigger.oldMap.get(acc.Id);
ar.addError('Only if the isAccountChanged is checked,You can modify the account!');
}
}
}
}
}
kindlyt let me know incase the problem exists after this .