I want to create auto rule for inheritance of field value from parent to child

[AnnaVinnikova]

I need to have possibility to save/change/delete value parent's component field value to the child's component field

[Himanshi]

Hello @AnnaVinnikova , 

Welcome to the community!

You can check the community post discussed some similar use case :https://community.atlassian.com/t5/Jira-Software-questions/Is-it-possible-to-update-the-Parent-ticket-s-Component-field/qaq-p/1409863

You can tweak the automation rule mentioned as per your requirement a little.

Though this one is not for the component field but I felt its worth sharing , you can refer the logic of the automation rule mentioned in this post :

https://community.atlassian.com/t5/Automation-questions/Automation-rule-to-update-parent-issue-due-date-to-the-latest/qaq-p/1863006

Have a great day !