SAP Message ALSMEX024 - Fields of this record type cannot be used for transactions

Diagnosis
You tried to assign a field of the Microsoft Excel file with recordtype &v2& to a field of the "Transactions" tab page.
However, fields of the Excel file from rows with record type &v1& arealready assigned to fields of the "Transactions" tab page.
You can only assign fields of one record type to transaction fields.
INCLUDE ALSMEX_DEPRECIATION_TABS

Procedure
You can only assign the selected field of the Excel file to a field ofthe "Transactions" tab page, if you you cancel the assignments of allfields of record type &v1& to transaction fields.