Load data is incorrect
Your COPY operation can load incorrect data in the following ways. We suggest the following troubleshooting approaches.
Wrong files are loaded
Using an object prefix to specify data files can cause unwanted files to be read. Instead, use a manifest file to specify exactly which files to load. For more information, see the copy_from_s3_manifest_file option for the COPY command and Example: COPY from Amazon S3 using a manifest in the COPY examples.