SAP Message ALSMEX026 - Fields of this record type cannot be used for transactions

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

Procedure
INCLUDE ALSMEX_ASSIGNMENT