How to make field mandatory in related list based on input in another related list of same form

[shalani1]

Hi,
I need to make configuration item mandatory in "affected ci" in change request table if outage is added to change form of current record. 
Please can anyone help me with some suggestions.
Thanks in Advance!

Shalani R

[AnubhavRitolia]

Hi @shalani1 

Please refer below link which may help you to reach towards your solution:

https://www.servicenow.com/community/itsm-forum/mandatory-related-list/m-p/813518

[shalani1]

Thanks for the response @AnubhavRitolia.
I have checked the link and its completely created on making field mandatory in related list based on input in form.
But my requirement is to make field(configuration item) mandatory in "affected ci" tab if outage is attached in change request. Its completely making one field mandatory in related list tab based on input in another related list.