Add error message when adding Parent & child incident

[Kusuma Sai]

Hi sir,
1. If i have a added a Parent incident by using reference field - then show the error message on the form
2, If i am adding a child incident by using related list - then show the error message on the form
for 1st scenario - i have written OnChange cs- it works perfectly.

for 2nd scenario - i have written after BR - update - works fine. but when added a parent incident then update/save the incident then it was showing the AfterBR error message. it won't comes when adding a incident in the reference field. please suggest
@Ankur Bawiskar , @Kieran Anson. @AndersBGS 

[Kusuma Sai]

@Ankur Bawiskar No sir, I am facing issue with After BR - update operation.
when added the Parent incident then saved the record - after saved reloading the form - then BR error message is showing.

[Ankur Bawiskar]

@Kusuma Sai 

your business rule should be configured to run as Before Update

If my response helped please mark it correct and close the thread so that it benefits future readers.

[Kusuma Sai]

@Ankur Bawiskar , Can you please help me on Before Update, i have tried it- but not helping

[Ankur Bawiskar]

@Kusuma Sai 

please share what before update BR you configured, share screenshots

[Kusuma Sai]

tried like
if(!previous.child_incidents && current.child_incidents){

gs.addErrorMessage('child Error');

current.setAbortAction(true);

}

Tried with 'parent_incident' and 'child_incidents' also @Ankur Bawiskar sir

i think the issue with both 'parent_incident' reference field and using same field value in BR also when adding 'child incident' by using related list. 

But using 'child_incidents' it was not working
please suggest how to over come this issue