Overview

Amazon’s feed processing engine returns error 5011 when an XML feed contains a MessageID that falls outside the permitted numeric range. The issue appears during product, inventory, or price feed submissions and can halt the entire upload, delaying critical catalog updates. Sellers who rely on automated feeds must understand the ID requirements to keep their listings current.

Key Points

• Error 5011 signals an out‑of‑range MessageID — Amazon rejects any feed where at least one MessageID does not conform to the required integer format.
• MessageIDs must be whole numbers — Decimal values, alphabetic strings, or symbols in the MessageID element trigger the error.
• Acceptable range follows the 64‑bit signed integer limits — Valid IDs run from ‑9,223,372,036,854,775,808 to 9,223,372,036,854,775,807.
• One bad ID can block the whole file — Even if 99 % of the messages are correct, a single offending ID prevents Amazon from processing the entire feed.
• Common sources include buggy scripts and template edits — Automatic feed generators may produce floating‑point numbers or overflow counters, and manual copy‑pastes can insert stray characters.
• Pre‑submission validation eliminates most occurrences — Running a numeric‑only and range check on every MessageID before upload catches errors early.

How XML Feed Message IDs Work

1. Assign a unique MessageID — Each <Message> block in the XML must contain a distinct <MessageID> value; for example, a price update feed might use IDs 1, 2, 3 for three SKUs.
2. Use a 64‑bit signed integer — The ID is stored as a standard 64‑bit integer; a typical e‑commerce platform will represent it as a long or bigint type, such as 1234567890123456789.
3. Amazon tracks each message independently — During processing, Amazon matches the <MessageID> with internal logs, allowing it to acknowledge successful rows and isolate failures.