The addback for PTET tax payments is not permitted as an adjustment to the IT-204 at this time.  This addition is only utilized on IT-201, IT-203 and IT-205 filings.  Please see page 18 of the IT-225 instructions that details which filings can utilize the addback on the IT-225.  I am also including a screen shot.  Please let me know if you have additional questions. 

Thank you very much!  I had already finally found the answers from NYS after more research.  The add back is at the personal or trust level and the credit is coded 653 on the IT-204 and related K1 forms.  Thanks again!