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Using the Headless SDK, requests can be easily customized to set a specific expiry, adjust the OTP length, and select a preferred delivery channel such as WhatsApp, SMS, or Viber for phone number authentication. After successfully integrating OTPLESS React Native headless SDK, you can set the following custom parameters:

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Custom Expiry

Headless request can be customized with custom expiry. 
let headlessRequest: any = {};
// Set expiry in seconds
if (phoneNumber) {
    headlessRequest = {
        phone: phoneNumber,
        countryCode: countryCode,
        expiry: expiry
    };
}

headlessModule.start(request);

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Custom OTP length

Headless request can be customized with custom OTP length 4 or 6. 
let headlessRequest: any = {};
// Either 4 or 6
if (phoneNumber) {
    headlessRequest = {
        phone: phoneNumber,
        countryCode: countryCode,
        otpLength: otpLength
    };
} 
headlessModule.start(request);

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Custom Delivery Channel

Headless request can be customized with custom Delivery Channel like WHATSAPP, SMS and VIBER. 
let headlessRequest: any = {};
// WHATSAPP,SMS and VIBER
if (phoneNumber) {
    headlessRequest = {
        phone: phoneNumber,
        countryCode: countryCode,
        deliveryChannel: deliveryChannel
    };
}
headlessModule.start(request);
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