Issue with Single Payment Vendor Creation

Hello All,

We have a unique situation. Whenever I create a Single Pay Vendor, the sytem lets me save the same in our environment but I am unable to use the same on a Single Payment Voucher. I get a message Addreess Sequence for Vendor being invalid. When I prompt, don't see any. I replicated the same in our DEMO with no issues.

I traced the issue and found that in DEMO, a record with some default information is created for single pay vendor in PS_VENDOR_ADDR but the same is not happening for me in our DEV environment. I did not see any setup specific for Single Pay Vendors so I am kind of puzzled.