Error 21916052 — Gallery duration cannot be shortened

The gallery duration cannot be changed to a shorter time period if the lifetime option is selected.

eBay requires at least one product image (PictureURL or stockphotourl), accepts up to 24 images per listing, and enforces minimum dimensions of 500 pixels on the longest side. Images must be hosted on https URLs reachable by eBay's image fetcher.

1. Provide at least one image at minimum 500 pixels on the longest side (recommended 1600x1600 for the best zoom experience).
2. Use https URLs only — http URLs fail in modern eBay listings.
3. If hosting on a CDN, confirm eBay can reach the URL without authentication or bot challenges.
4. Maximum 24 images per listing; use them — listings with multiple angles get higher conversion.
5. Avoid frames, watermarks, or text overlays that violate eBay's photo policy.

• Hot-linking from a personal Dropbox or Google Drive — those return HTML, not the image
• Submitting JPEG corrupted by transcoding — Pic Picker fails silently