Kyriba Payment Manager - Field Mapping Assistance

Problem: I am working in a NetSuite account with the Kyriba Payment Manager Bundle 77255 installed. I created customization where the field values from the Primary Bank Payment Details associated with Vendor record are copied to the Kyriba Fields on save of the Vendor record. I am not familiar with some of the terminology used for the Kyriba Fields nor do these fields include context help. Would someone be able to point me in the direction of documentation on the custom Kyriba fields in NetSuite and how they might map to a Bank Payment Detail record fields?

All guidance or references you could pass along will be much appreciated!