What is the significance of having the correct hostname for a cloud server in the control panel of the hosting company

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Published on 2014-06-02T15:15:17Z Indexed on 2014/06/02 15:30 UTC
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hostname

What could be a problem that could arise if i do not have the correct hostname as my device name for the cloud server in a control panel of my hosting company

basically the device name is supposedly the hostname

when i created the cloud server they ensured this was my hostname for my new cloud server. but it looks like they will not allow me to use a domain name that is all digits.

currently my host name in the cloud server itself is a domain name that is all digits.

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