Custom Field should NEVER be referred to only by name in the UI

[KC Wong]

I think since the very early days in Jira Data Center, custom field names have never been unique. 

Yet, all over the interfaces, you have selection for custom fields that show nothing but the name. 

This is from CSV import (old experience): 

One Team is my custom field, with its context restricted to my space only. The other Team is a locked field so I can't get rid of it even if I wanted to.

You have the same problem in Space settings | Screen as well. 

[Trudy Claspill]

Hello @KC Wong 

As this is a user community it is not the best venue to ensure that your feedback is received by Atlassian and documented as a Suggestion/Change Request.

Better methods are to open a support case with Atlassian directly, and get from them an ID for a corresponding change request, or provide the feedback to them through the Feedback option under the Help menu within the Jira application.

[Arkadiusz Wroblewski]

@KC Wong 

I wouldn’t call it a problem; it is known behavior.

Restrict Team-Managed custom fields name if already exists another custom field with the same name

[JRACLOUD-98175] Restrict or warn against creating custom fields with duplicate names in Team-Managed Spaces - Create and track feature requests for Atlassian products.