eBay Error: 21916605 Only single item quantity is permitted when the listing is in auction-style or under selected categories in Fixed Price format.

The "Only single item quantity is permitted when the listing is in auction-style or under selected categories in Fixed Price format" error on eBay indicates that the listing format or category chosen does not support multiple item quantities. Auction-style listings typically allow only one item per listing to ensure fair bidding. Similarly, certain fixed price categories may restrict listings to single items to comply with category-specific guidelines. This error prevents the listing from being processed until the quantity is adjusted to one.

Common Causes:

1. Auction-Style Listings: Attempting to list multiple quantities in an auction-style format.
2. Category Restrictions: Listing multiple quantities in a fixed price format within a category that only allows single item listings.
3. Misunderstanding of eBay Policies: Lack of understanding of eBay’s guidelines for listing quantities.
4. Bulk Upload Errors: Errors in bulk upload files where multiple quantities are listed in unsupported formats or categories.
5. Manual Entry Mistakes: Mistakes made during manual entry of listing quantities.

To resolve the "Only single item quantity is permitted when the listing is in auction-style or under selected categories in Fixed Price format" error on eBay, follow these steps:

1. Review eBay’s Listing Quantity Guidelines:
   • Familiarize yourself with eBay’s guidelines for listing quantities in different formats and categories. Understand the restrictions for auction-style listings and specific fixed price categories.
   • Ensure your listing format and category comply with eBay’s standards for item quantities.
2. Check Current Listings:
   • Access your eBay seller dashboard and navigate to the listing with the error. Review the current quantity specified.
   • Identify if the listing format or category supports multiple quantities.
3. Adjust Item Quantity:
   • For auction-style listings, set the item quantity to one. Auction listings are designed for single items to ensure fair bidding.
   • For fixed price listings in restricted categories, set the item quantity to one as required by the category guidelines.
4. Consider Alternative Formats or Categories:
   • If you need to list multiple quantities of an item, consider changing the listing format to a fixed price format in a category that supports multiple quantities.
   • Ensure the new format or category aligns with your selling strategy and complies with eBay’s guidelines.
5. Update Bulk Upload Files:
   • If using bulk upload tools, review your CSV or Excel files to ensure all listings have the correct quantity based on the format and category.
   • Use eBay’s bulk upload templates and validation tools to check for errors before submission.
6. Manual Entry Checks:
   • For individual product listings, manually enter the item quantity accurately. Double-check for any typographical errors or incorrect entries.
   • Ensure that the quantity is set to one for auction-style listings and restricted fixed price categories.
7. Save and Verify Changes:
   • After making the necessary adjustments, save the changes to the listing. Ensure that the new settings are reflected correctly in the eBay seller dashboard.
   • Verify that the error has been resolved and that the listing is active with the correct item quantity.
8. Clear Browser Cache and Cookies:
   • Clear your browser’s cache and cookies to ensure you are viewing the most recent version of your listing.
   • Try using an incognito or private browsing mode to rule out browser-specific problems.
9. Contact eBay Support:
   • If you’ve tried all the above steps and still encounter issues, contact eBay support for assistance. Provide detailed information about the error and the steps you’ve taken to resolve it.
   • Engage with eBay seller forums and communities to seek advice from other sellers who might have faced similar issues.