Question:
Trying to run stock valuation report but no report ID has been set up (it was set up in HEL2 as HEL1)
Answer:
Below are instructions for you and your team to setup the "ID" for the Inventory Report Value layouts. As you are an admin in UAT, you have to ability to set this up. Here are the steps to follow:
Go to the Cost Management module:
Cost Management -> Inventory accounting policies setup -> Inventory value reports

This will take you to the screen which will allow you to configure the report as you desire:
Once you have saved your changes, you will now see it as an option in the "ID" dropdown.
Eric suggests that you copy the information used by HUS (you have access to HUS in UAT because you are set as an Administrator). Or you can go to the "HEL2" test region and copy those setting to UAT. It is your choice.
For more information, below is a basic video on how this can be setup. The video uses AX 2012 but it still relevant to D365.