Why "Add > Successor issue" is grayed out and can not be selected?
I tried to create a successor issue, but "Add > Successor issue" is grayed out and it can not be selected. Why?
If one of the following items apply to your case, it is a possible cause for this problem:
You are trying to add it from a project or a version, not an issue
The issue does not have Start date / Finish date
The issue the lower node of a version and the fix version of the issue is empty
Gantt configuration > View > Dependency link is disabled
Besides, the user must have the following permissions in Jira:
Issue creation permission
Issue link creation permission
In the case of the issue template mode, the project management permission needed adding on the above two