How to Activate Financial Statement Version
You created an FSV and then you want to activate this one.
As soon as you create a new FSV you need to activate the item, otherwise, you will not able to use in the system.
You have two options to activate the FSV:
1. In app "Manage Financial Statement Versions". after saving the changes of FSV item, the activate button will be pop up.
2. In app "Replicate Runtime Hierarchy", as per SAP KBA 2777974.
SAP KBA: 2781846 - How to Activate Financial Statement Version (FSV) in S/4HANA Cloud