Unknown hostname error when running SCP from Powershell script

I am trying to write a Powershell script that copies files from a Windows PC to a Linux box.

I am able to SSH into my remote Linux machine from a Powershell window using SSH keys (stored in %userprofile%/.ssh/ on the Windows machine. I can also run an SCP command from the terminal window copying files from the Windows machine to the Linux box.

However, the very same scp command fails when run from a script (script.ps1) with the following error:

ssh: Could not resolve hostname <hostname>: No such host is known.
lost connection

Anyone know why scp cannot resolve the hostname when run as a script in Powershell, when it can from the terminal?

The scp command I am running looks like:

& C:\Windows\System32\OpenSSH\scp.exe -r 'bin/release/net7.0/linux-x64/publish' <user_name>@<comp_name>:/home/<user_name>/containers/net_ws/app

As an aside, I tried to ping the <comp_name> from within the same script and it pings successfully, so there appears to be no issue resolving the comp_name host within the powershell context.

Problem solved, thought full explanation is lacking.

I have solved the script issue by replacing the comp_name with the ip address of the device.

& C:\Windows\System32\OpenSSH\scp.exe -r 'bin/release/net7.0/linux-x64/publish' 
<user_name>@<ip_address>:/home/<user_name>/containers/net_ws/app

I'm still curious as to why scp is unable to resolve the ip address from the host name in this instance - i.e. when running as part of a script, rather than in the terminal, especially since other executables running in the same script context are able to find the host.