Identifies the SCFA as a provider carrier system.
VALID ENTRIES:
Y = Provider carrier system
USAGE: This field is conditional.
NOTE 1: Required when the first position of the REQTYP field on the ASR Form is “E”, “S”, "V” or “X”, the SCFA is a provider carrier system, and the NC code does not specify a virtual concatenation service, otherwise prohibited.
DATA CHARACTERISTICS: 1 alpha character.
EXAMPLE: Y