Unable to import expenses from a third party system

Hi,

   I am trying to load expense reports from a third party system into Projects. In 11i, I could load the transactions as uncosted and unaccounted. In 12.1.3, I am getting the error PA_ER_NOT_ACCOUNTED. Do the expense reports need to be costed and accounted before importing into Projects? If yes, what columns in the pa_transaction_interface_all table need to be populated for these two conditions to be satisfied?

Thanks in advance

Pournima