When using SubmitFeed() OrderAcknowledgement, don’t specify MarketplaceIds.
Otherwise MWS will barf and not tell you why.
When using the SubmitFeed() operation to submit an OrderAcknowledgement feed, it is important not to specify the MarketplaceIds parameter. If you include the MarketplaceIds parameter in your request, MWS may encounter an error and fail to process the feed without providing a clear explanation of the issue.
To avoid this problem, simply omit the MarketplaceIds parameter when making the SubmitFeed() call for OrderAcknowledgement. By doing so, you can ensure a smooth submission process without encountering any unexpected errors.
If you have any further questions or need clarification, feel free to ask.
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