UnderlyingIDSource (Tag = 305, Type: String)

Underlying security's IDSource. See IDSource (22) field for description

Valid values:
'1' CUSIP
'2' SEDOL
'3' QUIK
'4' ISIN number
'5' RIC code
'6' ISO Currency Code
'7' ISO Country Code
'8' Exchange Symbol
'9' Consolidated Tape Association (CTA) Symbol (SIAC CTS/CQS line format)
'100' ... '100000000000'

Used in: