Is it Possible to Migrate Business Partner with roles Account and Supplier?
It is not possible to migrate the Business Partner with the roles Account.
You can migrate the Business Partner only with roles Supplier and Customer. It is not possible to migrate a Business Partner directly as a Supplier or Customer. First, you should migrate the Suppliers or Customers using the activities Migration of Suppliers or Migration of Customers respectively. Then you can migrate the Business Partner Relationships using the activity Migrate business partner relationships using the migration tool.
KBA , SRD-MD-BP , Business Partner , How To