public void setOriginationNumber(String originationNumber) {
        this.originationNumber = originationNumber;
    }
<p>
The long code to send the voice message from. This value should be one of the dedicated long codes that's
assigned to your AWS account. Although it isn't required, we recommend that you specify the long code in E.164
format, for example +12065550100, to ensure prompt and accurate delivery of the message.
</p>

@param originationNumber
       The long code to send the voice message from. This value should be one of the dedicated long codes that's
       assigned to your AWS account. Although it isn't required, we recommend that you specify the long code in
       E.164 format, for example +12065550100, to ensure prompt and accurate delivery of the message.
aws-java-sdk-pinpoint/src/main/java/com/amazonaws/services/pinpoint/model/VoiceMessage.java