CSM for Amazon Release Notes - 4.1.2026110229.329600

Released: November 2, 2026

Overview

This is a hotfix for Channel Sales Manager for Amazon 4.1. It corrects how CSM reads the processing report that Amazon returns for a submitted feed, so that reports Amazon delivers in compressed (gzip) form can be processed. 

Fixed

Feed processing reports that Amazon returns in compressed (gzip) form are now processed:

• Amazon can return the processing report for a submitted feed (the result file, for example for order fulfillment feeds) in compressed gzip form. Previously CSM read the downloaded file as plain text, so a compressed report could not be read.
• CSM now checks the downloaded file for the gzip signature and decompresses it when it finds one. A report that is not compressed is still read as text. The check looks at the downloaded file itself, so it does not depend on the compression information Amazon returns separately.
• Feeds whose result download has already been attempted are not downloaded again, so this update does not repair reports that failed earlier. It applies to feeds whose result has not yet been downloaded.