Reconciling the YTD Taxable Gross on the R073012 Payroll Register

*** IMPORTANT NOTE *** I think I have finally figured this one out, but in case that the Taxable Gross YTD Amount does not come from the F0713, please correct my assumption, thanks. I have not deleted the Question in case that can help someone in the HCM Community. The answer is: The YTD Amount Total Taxbl value at the bottom of the check, left hand side on the R073012, comes from the F0713. *** END OF NOTE ***

On the Payroll Register for a given employee, I am trying to reconcile what makes up for the Total YTD Amount Txbl value.

I have easily reconciled all YTD Amounts individually printed on the left hand side column of the paycheck, as well as the YTD Amount Total "Gross" value at the bottom left. I have reconciled all numbers against the F06146.