binary logit model

Hi,
I want to estimate a binary logit model with stata, I used this command "logistic seuil1 profession region age statumatri education", but it is always this window that appears:
outcome does not vary; remember:
0 = negative outcome,
all other nonmissing values = positive outcome
r(2000);
I do not know where is exactly the problem?
please help me
Many thanks to y'all!
regards,
Amal
I want to estimate a binary logit model with stata, I used this command "logistic seuil1 profession region age statumatri education", but it is always this window that appears:
outcome does not vary; remember:
0 = negative outcome,
all other nonmissing values = positive outcome
r(2000);
I do not know where is exactly the problem?
please help me
Many thanks to y'all!
regards,
Amal