Instantly Common Errors Overview Diagnostic reference for Instantly API v2 errors. Covers HTTP status codes, campaign state errors, account health issues, lead operation failures, and webhook delivery problems. Prerequisites - Completed setup - Access to Instantly dashboard for verification - API key with appropriate scopes HTTP Status Codes | Status | Meaning | Common Cause | Fix | |--------|---------|-------------|-----| | | Bad Request | Malformed JSON, invalid field values | Validate request body against schema | | | Unauthorized | Invalid, expired, or revoked API key | Regenerate key in…