横截面Logistic回归，显示出现下面的提示，请问各位大师，这是哪里出问题了？
proc logistic data=shuju.sample2;
model div(event="1")=oconf cps growth size leverage state nprps year2010 year2011 year2012 v1-v11;
run;

NOTE: PROC LOGISTIC is modeling the probability that div=1.
WARNING: There is possibly a quasi-complete separation of data points. The maximum likelihood estimate may not exist.
WARNING: The LOGISTIC procedure continues in spite of the above warning. Results shown are based on the last maximum
         likelihood iteration. Validity of the model fit is questionable.