Adding custom fields to PAY1

SOLVED

Hi there,

I have a need to add a custom field to the grid array in screen PAY1, but I noticed the screen itself it is marked as "Templ. screen" and the verification button is greyed out. I tried adding the field anyways and verifying entry transaction RECWT as a test - the field does not appear. I tried adding the field directly to the RECWT screen, WMP1RECWTUSA, but verifying the entry transaction removes the custom fields from WMP1RECWTUSA.

Does anyone know where to add new fields for AP/AR Payment/Receipt transaction screens?

Thank you,

Zoey