The EDI source data file is needed from the Company/Trading Partners. The top line appears as follows:
ISA*00*0000000000*00*0000000000*08*4532345856 *12*8038025150 *020624*1158*U*00401 *000000009*0*P*>~
The ISA11 it will a letter. It appears in the 12 column in the above line. In this case is the letter U.
Open up/Configure the Trading Partner shape.
Choose the company . (Click on the pencil icon)
Choose ISA Versions on the next window.
Enter the letter U in the label :
Interchange Standard ID (ISA11):