Hi Francois,
when migrating an existing schema this information is not neccesary.
Just specify the URL, the user/schema to be migrated and its password and select the Product or Compoent you want to migrate.
The User (WMAPIIS in your screen shot) should already have all neccessary rights from schema creation to allow migrating the schema via DCC.
If there are problems arising during migration you should consider contacting SAG Support by openening a ticket in Empower for these.
Regards,
Holger
#webMethods#Integration-Server-and-ESB#webMethods-General