Hi, all,
Thank you all for your answers on the ST Control Number format.
We have a TP asking us to send them FA 997 with ISA control number = 837 ISA control number they sent us. And, 997 GS Control number = 837 GS control number they sent. Is this correct for FA 997?
I thought GS Control Number is ACK or NAK in AK1-02 and Transaction Set Control Number is ACK or NAK in AK2-02. And, we should just use the next ISA control number and next GS number.
Another general question:
Is the ISA control number still "meaningful" if TP exchange messages directly via FTP without going through a VAN ? How important is the GS control number in this case?
  ;
Hope to hear from you. Thanks much.
__._,_.___