OTP API Errors: 10 Common Issues and How to Fix Them (2026)
You’ve wired up the Arkesel OTP API endpoint. You fire off your first request. Instead of a delivered OTP, you get this: { "code": "1004", "message": "SMS gateway not active or credential not found" } Now what? This OTP API integration troubleshooting guide maps every Arkesel OTP API error code to its root cause, shows […]
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