Czechoslovakia was not invited, neither was Stalin consulted on the Munich agreement signed at the Munich Conference.
Germany, Italy, Great Britain, and France were present and represented at the signing of the agreement on the 29th and 30th of September 1938.
It agreed that Czechoslovakia must give up its border regions and defenses to Nazi Germany.
See the link below for more about the Munich Conference:
https://brainly.com/question/1001421