Solved Yellow triangle with exclamation point

[blackstones]

Hey i sent a sms and something happend and the sms didnt get sent so i get a message if i want to resend it and i think i say no. But now i have a Yellow triangle with exclamation point. I cant press it and cant get rid of it.
How can i remove this yellow triangle?

I do not want to delete every sms from this contact since its a lot and i cant find that sms that isnt
sent in the list over sms.

Anybody now a fix?

 

[blackstones]

It was a old sms very far back in the list that had a red resend button under it that was the cause and when it was sent the yellow triangle went away. just dint look far enough back