We are using Adobe Campaign Classic v7. We have to export files and send it to S3 buckets. Due to data residency requirement, the S3 bucket has to be in Canada. Currently the ACC instance is in Canada aswell. The S3 integration works for US buckets but when we try the buckets in Canada, it doesnot work. It gives error bad request with error code of 400. We validated that the access works for the keys using aws-cli. Below is the debug log for the file transfer activity. We have tested for 3 US regions and it works for US but Canada regions do not work with error of bad request.
07/16/2019 5:32:44 PM CRL-290162 AWS Error 400 while requesting to upload the query
07/16/2019 5:32:44 PM CRL-290003 Upload error in cURL