I am using JIRA service desk server 7.3, looking for a solution to create a interactive field which shows list of values from database for users to choose from (eg. database clones), if user wants to create a new clone then on choice of custom, there should be a free text field to allow to create a new one.
On customer entering new name in the free text field, there shoudl be a validation to make sure customer is not entering the existing value.
Is there a way to do this with JIRA service desk and additional plugins?