Required Tag Notation

Message tables include the Req column that identifies which tags are required.

•      Y: The FIX message must include this tag.

•      Y*: The tag is required by the CQG gateway, not the FIX 4.2 protocol.

•      C: If a particular condition is met, then the FIX message must include this tag.

•      N: Although the FIX message does not require this tag, it can be provided to specify any additional information.

If a field has a maximum length and no specified valid values, the length is listed in parentheses in the Format column.