SNS: Phone carrier has blocked this message when message includes URL

Hi, I was using SNS to send transactional SMS. When ever the message contains a URL, I get error message that the "Phone carrier has blocked this message" from the Delivery status logs. The carrier is T-Mobile. The message is: "Thanks for attending our GW004 event at GW004! see for dets- aws3.link/nkhNzy". It gets delivered if I remove the link from message body.

`@message {"notification":{"messageId":"91a4663a-61bb-575a-9f06-3a79c825faed","timestamp":"2023-01-19 20:26:06.957"},"delivery":{"phoneCarrier":"T-mobile USA Inc.","mnc":800,"numberOfMessageParts":1,"destination":"+12244328742","priceInUSD":0.00831,"smsType":"Transactional","mcc":310,"providerResponse":"Phone carrier has blocked this message","dwellTimeMs":22,"dwellTimeMsUntilDeviceAck":1160},"status":"FAILURE"} @timestamp 1674159970707

delivery.phoneCarrier T-mobile USA Inc. delivery.priceInUSD 0.00831 delivery.providerResponse Phone carrier has blocked this message delivery.smsType Transactional ` Could you please let me know what I could do?

Thanks!