The Solution: You can not upload the file directly to the iSeries with out a file description file because the software needs to know the properties of the fields you are appending to, Thus, you would need to download the target file, save the file description (*.fdfx) and upload (append to member) using the previously saved file description.

Note: the transaction file to be appended has to have the same columns and column order as the DB2 file. The length of the data and data type should also be valid.