IDSource (Tag = 22, Type: String)

Identifies class of alternative SecurityID (48)

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: