PROC Genmode Error -

[Question]

Hi,

I would like to run the code below, but I get the following error. It's the first time I run Proc genmode, your help would be much appreciated. Thank you

proc genmod data=work.Gen_model ;
  class customer_id2 A B C;
  model Target0(event='1')=A B C D E F G / dist=bin;
  repeated subject=customer_id/sorted type=exch ;

run;

NOTE: PROC GENMOD is modeling the probability that Target0='1'. One way to change this to model the probability that Target0='0' is
to specify the DESCENDING option in the PROC statement.
NOTE: Algorithm converged.
ERROR: Error in computing the variance function.
ERROR: Error in parameter estimate covariance computation.
ERROR: Error in estimation routine.
NOTE: The SAS System stopped processing this step because of errors.
NOTE: PROCEDURE GENMOD used (Total process time):
real time 0.09 seconds
cpu time 0.06 seconds

[Ksharp]

class customer_id2 A B C;

--->

class customer_id  A B C;