We have a file in S3 that is loaded in to Redshift via the COPY command. The import is failing because a VARCHAR(20) value contains an Ä
COPY
VARCHAR(20)
Ä
Please check below link
http://docs.aws.amazon.com/redshift/latest/dg/multi-byte-character-load-errors.html
You should use ACCEPTINVCHARS in you copy command. Details here
http://docs.aws.amazon.com/redshift/latest/dg/r_COPY.html#acceptinvchars