http-505
Moderate
HTTP API · API Responses
HTTP 505 HTTP Version Not Supported indicates HTTP protocol version unsupported for this API request path.
Quick Answer
Error code HTTP-505 on your HTTP API API Responses means: HTTP 505 HTTP Version Not Supported indicates HTTP protocol version unsupported for this API request path.. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Inspect API logs/traces for HTTP 505 with full request/response metadata.
2
Validate request construction against endpoint spec focusing on: HTTP protocol version unsupported.
3
Check upstream dependency health, timeout budgets, and recent deploy changes.
4
Add explicit handling path for HTTP 505 in SDK/service code.
5
Run regression tests to confirm HTTP 505 no longer appears unexpectedly.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
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