lambda blueprint iot-button-email configuration displays invalid Input

Question

I'm using AWS Lambda Blueprint iot-button-email. But it  isn't accepting the serial number, even if I'm quite sure it is correct: 

It's preventing the creation of a Lambda. Can anyone tell me what am I doing wrong?

Thanks!

Answer 1

There is a post in the amazon forum where it says, it was a bug, which is now fixed.