eBay Inventory API rejects numeric condition IDs (e.g. "3000") and requires string enums (e.g. "USED_VERY_GOOD"). Was causing 400 errors on every post attempt. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
eBay Inventory API rejects numeric condition IDs (e.g. "3000") and requires string enums (e.g. "USED_VERY_GOOD"). Was causing 400 errors on every post attempt. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>