Diagnosis
For general ledger account assignment with general ledger group '&V1&',account currency '&V2&', general ledger transaction '&V3&', additionalkey '&V4&', the offsetting account is not permissible as this accountis already entered as general ledger account or as debit or creditaccount to which the general ledger account is transfer posted(transfer posting payables / receivables).

Procedure
Correct the accounts.