Adding support for RA820 message

820 Payment Order/Remittace Advice
RA820 Work in progress
work in progress
work in progress
latest code that generates exception
edi pp runs now
RA820 passes edi-pp correctly

not edit-ed
PO850 - purchase order - working
WA142 - Product Service Claim
WA142 - 'product service claim'  completed
PC 860 Purchase Order change completed
SS862 Shipping Schedule parses correctly

guide is incomplete -- work in progress
PS830 Planning Schedule with Release Capabilities
Capability

edi-pp reports 'on-deterministic state'
SH856 & FA997
cleaning some segment definitions

chasing non-deterministic errors
added support for SQ866

Production Sequence
PO830 support

not fully parsing yet
SH 856 parses now
Non-deterministic state

while using Transaction_set_defs
SH 856 v4010 parses correctly now