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OCC Clearing Reference

The following table can be used to assist firms in mapping values sent in FIX to their associated field names at the OCC. Note that ClearingAccount (FIX Tag 440) is not sent to the OCC.

TagField NameOCC Mapping
115OnBehalfOfCompIDExec Broker
1Account
  • The first ten characters will appear in the Account # field.
  • The entire 16 character string will appear in the Optional CM Data field.
17ExecIDTrade ID
37OrderIdExchange Data
11ClOrdIdOrder ID
439CMTANumberCMTA CM#
440ClearingAccountNot sent to the OCC.
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