PCC Posting to Finance Process Step

Hi,

We are implementing PCC at a client in a Lab environment (ECC on prem) with no integration to any other systems (FI included). After much challenges I am eventually at the Posting step. My question is, why does it go straight to Release Posting document before it even created the posting document. I know the documents in the Production Payroll (step 2) created incorrect documents, but at least it did create something.

I am desperate to get this resolved, please....