Report To Display Parent Incident Records

Summary

Child Incident need to show all other incidents related to one parent incident

Content

Hi,

I have custom incident report which display all related incidents belong to one parent. For example - 

Parent  = Incident ID i.e 123

Child 1 = 456

Child 2 =  789

Child 1 must display 2 incidents (Child 1 & Child 2 has same parent) under Children Tab. Child 2 must display 2 incidents (both have same parent ID). I set dynamic filter with incident.parent_id = incident.i_id as inner join. This report works well in parent incident but unable to get parent ID in child workspace. In child workspace, parent ID field exist and has value as Reference number.