Unable to setup an approval step using the standard "Approvers" field in Jira

[Dave Sohnchen]

I'm trying to setup an approval step in my workflow using the standard "Approvers" field the comes out of the box in Jira but when I go to the approval flow, that field is not present for me to select. When I type it in and hit enter, it says the field already exists. 

I'm currently using a Jira Cloud premium trial which I intend to purchase so I'm not sure if that's issue but I'd like to prove out my workflow first. 

Here is my workflow and what I see on the approval flow editor. The only "approver field" i see is a dummy one that I created but I have automations to set the "Approver" field based on criteria so I'd like to use the out of box field. 

Can someone help? 

[John Funk]

Hi Dave - Welcome to the Atlassian Community!

I assume that this is a Team-managed project - is that correct? If so, not all standard fields are available, you will need to create a new field as you are doing in your screenshots. This will be a field unique to this individual Team-managed project.