A simple google search would have answered your query!Is the AOSP rom not meant to work with Safetynet API for android pay? Can someone help me with this...? Since Sony is not making Android 6 Stock for Xperia Z, the only way is to use AOSP custom rom...hoping that someone here can answer my query....
http://www.howtogeek.com/241012/safetynet-explained-why-android-pay-and-other-apps-dont-work-on-rooted-devices/