My import file is .xls. I have tried to copy the format from the sample file but it doesn't make any difference.
Somewhere Excel or Adagio put a "/" after the account number.

Error: Invalid data '30010/' for field called 'Acct/Dept' of record 2.

Why does it show 'Acct/Dept' field even though I have the department and the account in separate columns, and on the template I have 2 separate fields too. According to the error message it looks as if the the "/" divides the account and the department.