Unable to create new issue

[Gobalakrishnan K]

Exception occurred: java.lang.IllegalArgumentException: Multiple entries with same key: customfield_10004=com.atlassian.jira.rest.v2.issue.IssueBeanBuilder2$FieldData@7b896c91 and customfield_10004=com.atlassian.jira.rest.v2.issue.IssueBeanBuilder2$FieldData@670a5223

[Sam Omidi]

It is due to Rank field I have created a KB at https://confluence.atlassian.com/display/JIRAKB/Can%27t+Create+Issue+Due+To+java.lang.IllegalArgumentException%3A+Multiple+entries+with+same+key

Cheers,

Sam 

[Nic Brough -Adaptavist-]

It's now very hard to do that in plain JIRA, but you've got a damaged issue in the database.

You might be able to repair it by editing the issue(s) that have many entries in customfield_10004, but I'd be more worried about how you got there - scripts?  Broken addons?