Can't create issues in projects that have required fields

Acording to Confluence 5.5 release notes,

• added support for creating JIRA Issues in projects that have required fields. There are still some limitations, but we currently support:
  • required system fields (for example Fix Version and Component).

I configurated Affects Version Fields as required. I tried to create issue from confluence, but it was failed. Confluence got error from JIRA as shown

{"issues":[],"errors":[{"elementErrors":{"errorMessages":[],"errors":{"versions":"Affects Version\/s is required."}},"failedElementNumber":0,"failedElement":{"fields":{"project":{"id":"10500"},"issuetype":{"id":"1"},"summary":"問い合わせ内容","description":""}}}]}