;Validate accept ack type and application ack type
VN
;Validate version number
MT
;Validate message type
RA
;Validate receiving application
DEESCAPE(INPUT)
;
; patch HL*1.6*120 - de-escape delimiters
; (assuming "\" is the escape character):
; - field separator (de-escape from \F\)
; - component separator (de-escape from \S\)
; - repetition separator (de-escape from \R\)
; - escape character (de-escape from \E\)
; - subcomponent separator (de-escape from \T\)
; \F\ will be de-escaped only if the length of FS is 1.