Your server to cloud migration using the Jira Cloud Migration Assistant (JCMA) has got stuck at a percentage or cannot complete.

Steps

• update all Tempo products to the latest version
  (be sure your Tempo and Jira versions are compatible) 

• if it does not complete using the latest version, please contact Support

Contacting Support

• specify if this is a test or production migration

• your on-premise SEN number

• the versions of Tempo and Jira you're currently using

• your Atlassian cloud URL

If you are unable to update Tempo/Jira to compatible versions, you will need to perform the migration manually: Manual migration guide