Need help updating the status values only for certain SharePoint List Items

I’m working on an automation project where I’m reading records from a SharePoint list (User Requests for Part Numbers) which provides the input data for creating SAP Part Numbers. My automation is nearly complete but I’m stuck on the step where I need to update the SharePoint record status field with a “Processed” or “Rejected” value depending on the for each activity result. I’d like to use the internal SharePoint “ID” as my key to update the status field for the record with the value captured in my argument “Processing Status”.

Wondering if you ever got past this point or issue…?
I am having the same type issue. I can perform a Get Item ok with CAML Query, but when doing the same for an Update, I get this…

“Update list items: Attempted to perform an unauthorized operation.”