Expected 11 bytes, field contained 26 bytes

Question

I'm trying to import data from a csv file into Teradata using tdload utility with the following command:

tdload -h TDPID -u dbc -p dbc -t DemoTable -f demofile.csv -d ',' 
--TargetWorkingDatabase AdventureWorksDW --TargetErrorLimit 100 jobid

I get the error :

Field length overflow(s) in record 1, field 1, '"ID"'. Expected 11 bytes, 
field contained 26 bytes.

How do I fix this?

Note - ID is an INTEGER column