What does it mean (i.e. what situation is being addressed) when the attribute table for the ZCTA shapes contains two shapeids for a given GEOID10 (e.g. 10307, Staten Island) each having a numerical suffix, but there is no shapeid for the GEOID10 without a suffix:
10696 -- does not exist
10696.0
10696.1
The data in the rows are identical.
shapeid ZCTA5CE10 GEOID10 CLASSFP10 MTFCC10 FUNCSTAT10 ALAND10 AWATER10 INTPTLAT10 INTPTLON10
10696.0 10307 10307 B5 G6350 S 5085103 17221 40.5091830000 -74.2377853000
10696.1 10307 10307 B5 G6350 S 5085103 17221 40.5091830000 -74.2377853000