Cause Code 98 on a Sprint Phone?

Like 10 minutes ago, I tried to text some people and this popped up: "Error! Message to <phone number> has not been sent. Please try again later. Invalid Destination. Cause Code: 98. Why in the world is it doing that? I googled about "cause code 98" and people were saying it happened to... show more Like 10 minutes ago, I tried to text some people and this popped up: "Error! Message to <phone number> has not been sent. Please try again later. Invalid Destination. Cause Code: 98.

Why in the world is it doing that? I googled about "cause code 98" and people were saying it happened to their phones too and it's because of a time change. Can someone please just explain to me about this "cause code 98", how to fix it, and what does it have to do with a time change? Thanks...
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