Again I believe you do not add the PTET back on the partnership return 225.  Other than reporting the actual PTET tax liability off the PTET return filed NOT the estimated payment made by the entity  to the shareholder as a credit I do not believe the entity reports the addback. It is a deductible tax like a payroll tax on the entitys federal and state return and I believe that is on the CASH basis not that actual amount computed on the PTET unless you happen to were good enough to have the actual liability equal the estimated payment when you paid the estimate in 2021,  The addback is done by the individual on their IT-201 which pro series does automatically when you enter the credit on the IT-653. 

If I am wrong, I may have some unpaid summer work lol like I need that.