Identifies that the customer is requesting S-VLAN ID preservation on a requested OVC.
NOTE 1: Preservation means that the S-VLAN values provided to an OVC at the ingress ENNI will be retained and the same values will be handed off from the OVC at the egress ENNI.
VALID ENTRIES:
Y = Preservation is being requested
USAGE: This field is conditional.
NOTE 1: Optional when all RUIDs indicate an ENNI, otherwise prohibited.
DATA CHARACTERISTICS: 1 alpha character
EXAMPLE: Y