Understanding Error 8119: How to Fix Invalid SKU Characters in Seller Central
Error 8119 blocks listings when a SKU contains characters outside Amazon’s allowed set (A‑Z, 0‑9, _ and -). A single bad SKU in a bulk file can halt the entire upload, as seen when a hidden zero‑width space delayed a launch by three days. Replace illegal symbols with _ or - and re‑upload to resolve.
Overview
Amazon sellers encounter Error 8119 when a SKU contains characters that fall outside Amazon’s permitted ISO‑based set. The listing is rejected, halting creation or update of the product. Detecting and correcting the offending characters early prevents costly delays, especially during bulk uploads.
Key Points
- ISO‑only characters — Amazon limits SKU values to letters A‑Z, numbers 0‑9, underscores (_) and hyphens (‑); any other symbol triggers the error.
- Typical offenders — Characters such as #, &, /, spaces, emojis, or accented letters are the most common sources of rejection.
- Hidden characters — Copy‑pasting from spreadsheets, ERP systems, or web pages can embed invisible Unicode markers that are not visible to the naked eye.
- Bulk‑file impact — A single invalid SKU in a flat‑file upload can stop the entire file from processing, delaying dozens or hundreds of listings.
- Error message detail — The Seller Central notification pinpoints the exact SKU that caused the failure, allowing targeted correction.
- Simple fix — Replacing each illegal character with an allowed underscore or hyphen and resubmitting resolves the issue in the majority of cases.
How to Fix Error 8119
- Identify the flagged SKU — Open the error report in Seller Central, locate the SKU listed (e.g., “SUMMER #2023”), and note its position in your upload file.
- Strip spaces and punctuation — Remove any spaces, slashes, or punctuation marks; “SUMMER #2023” becomes “SUMMER2023”.
- Replace illegal symbols — Substitute prohibited symbols with an underscore or hyphen; the same SKU could be rewritten as “SUMMER_2023” or “SUMMER-2023”.
- Eliminate hidden Unicode — Paste the SKU into a plain‑text editor (such as Notepad) and re‑type it, which removes invisible formatting characters that may have been copied from other sources.
- Validate the entire file – Run a quick search‑and‑replace across the whole spreadsheet to ensure no other entries contain #, &, /, or non‑ASCII characters; a spreadsheet formula like can flag problems.
Analysis & Recommendations
Why This Matters
A failed bulk upload stalls inventory activation and can postpone revenue; the example showed a three‑day launch delay, while each SKU fix typically takes under five minutes, impacting staff productivity and sales velocity.
Key Takeaways
- Error 8119 is triggered by any character beyond A‑Z, 0‑9, underscore (_) or hyphen (-).
- Hidden Unicode markers, such as zero‑width spaces, can cause rejections even when the SKU looks correct.
- One invalid SKU can stop processing of an entire bulk file, delaying dozens or hundreds of listings.
- Correcting a SKU by replacing illegal symbols with _ or - usually resolves the error in under five minutes.
Recommended Actions
- →In Seller Central, open the error report, locate the flagged SKU, and edit it in the upload spreadsheet to use only A‑Z, 0‑9, _ or -.
- →Paste each SKU into Notepad (or a plain‑text editor) to strip hidden characters, then copy back into the bulk file.
- →Run a validation macro or script in Excel/Google Sheets that flags any SKU containing #, &, /, spaces or non‑ASCII characters before re‑uploading.
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