症状

External System Import fails to import any CSV and shows the following error:

Error importing issue ExternalIssue{externalId=autoid-2070628689848586821, summary=Registration, issueType=null}

原因

この 既定の課題タイプ is not set in the associated Issue Type Scheme. 

ソリューション

1. Modify the Issue Type Scheme via Administration >> Issues >> Issue Type Schemes.
2. Select any issue type rather than 'None' from the Default Issue Type dropdown menu.
3. Save the modifications in the Issue Type Screen Scheme.