CO-PA External Data Transfer

Hello people

I am trying to use KEFC to load data from an external flat file (txt)

a) I used Define Data Interface KEFA using CE3XXXX Y CE4XXXX tables.

b) I used Maintain Transfer Rules KEFB, defining for characteristics the sender field and for ratios the formula field

c) Then I should create a txt file with the same order of the fields above defined ? or I need to define something more previous to use KEFC ?

because at the moment to try it, using parameters :

Sender structure : 10 (created with KEFA)

Input file : C:\10.txt

Editing : test run (flag)

The following message appear ; Enter either the physical file name or the logical file name

Thanks a lot!