Hi everyone! I Have a problem with the command merge because I need to merge two-panel datasets that have the same three variables (ISO codes origin and destination and year) but when I merge my using into the master, the result comes with no observations matched. I do not know what is wrong with the script because I think I did all right.
Please help me, I am desperate because I need it for doing my master's thesis.
Thank you so much,
Valentina