Identifies each EVC/PVC/VC as a unique number.
NOTE 1: This field reflects the value from the customer provided data on the associated EVC, PVC or VC Form(s).
USAGE: This field is conditional.
NOTE 1: Required when the first position of the REQTYP field on the ASR Form is āVā or āXā and the VC NUM on the VC Form is populated.
NOTE 2: Required when the EVCI or PVCI field on the ASR Form is populated.
NOTE 3: Otherwise prohibited.
DATA CHARACTERISTICS: 4 numeric characters
EXAMPLE: 0 0 0 3