Group text error: Message not sent:unsupported content

https://www.t-mobile.com/support/plans-features/consumer-versus-non-consumer-text-messaging#steps1

seeing as how you are trying to send to 50 people you might look over the provided link and see if its putting you into a different catagory of user..as in if you are trying to send to 50 people some political link then you just turned into a non consumer.

Types of messages

The wireless industry classifies text messages into two categories, consumer and non-consumer messaging. Each of these types of messages has its own route on the T-Mobile network.

Consumer messaging

These types of messages are sent by individuals directly to other people from their handsets. Consumer messages travel through SPAM filtering systems meant to block non-consumer messages our subscribers did not request, especially those messages with fraudulent or other harmful intent. 

Non-consumer messaging

All other messages are non-consumer messages. Examples of non-consumer messages include:

• Two-factor authentication codes
• Account notifications
• Marketing messages
• Billing related messages
• Messages with transportation and delivery services
• Political messages

For these messages to reach our customers they must be part of an approved campaign. They are subject to ongoing compliance and monitoring obligations. There is often a fee associated for those who want to deliver a non-consumer messaging campaign to our customers.