The License and Roles required to perform Planner Migration are as below :

1. Microsoft 365/Office 365(E3 or E5) License is required for Source & Target Connector Accounts.
2. Microsoft Planner License is required for both Source & Target Connector accounts.
3. Exchange Online license is required for Target Connector account.
4. User Administrator role is required for both Source & Target Connector accounts.
5. Source Connector Account should be a Member of the Plans that you chose to migrate (Please refer - How to Add ‘Source Connector Account’ as a member of the Plans through Apps4.Pro Migration Manager Tool).