I am unable to figure out the problem listed in obs 2 and 3. The input data set simply contains valid US zip codes, does the below message mean that any zip=. should be deleted before PROC GMAP?

The data set map is calculating a correct X, Y coordinate for the state=1 and it is possible I do not have values for that coordinate which is not an error if there is no matching zip hit

proc gmap data=map map=map; 
 id state; 
 choro state / anno=dot nolegend; 
run; 

quit;

Log:

NOTE: PROBLEM IN OBSERVATION     2 - 
     DATA SYSTEM REQUESTED, BUT VALUE IS NOT ON GRAPH    'X' 
NOTE: PROBLEM IN OBSERVATION     3 - 
     DATA SYSTEM REQUESTED, BUT VALUE IS NOT ON GRAPH    'X' 
here are the values in obs 2 and 3 

X=0.4104076833 Y=-0.134257981 DENSITY=4 STATE=1 SEGMENT=1  zip=. 
xsys=  ysys=  function= 
size=. flag=. when=  style=  text=  color= 
X=0.410376494 Y=-0.134449408 DENSITY=4 STATE=1 SEGMENT=1   zip=. 
xsys=  ysys=  function= 
size=. flag=. when=  style=  text=  color=