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30007: Message filtered
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30008: Unknown error
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30011: MMS not supported by the receiving phone number in this region
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30023: Daily Message Cap Reached
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30032: Toll-Free Number Has Not Been Verified
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21610: Attempt to send to unsubscribed recipient
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30033: US A2P 10DLC - Campaign Suspended
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30037: Outbound Messaging Disabled
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21612: Message cannot be sent with the current combination of "To" and/or "From" parameters
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30034: Number not A2P compliant. Please register for A2P