Most of the rates used in SynXis are derived in the Channel Manager from the base/rack rate sent from Visual Matrix (PMS). The rack rate (regardless of its name - BAR, RAC, DAILY, etc.) should always be a percentage discount.

Setting this rate as Excp/Fixed at $0 will prevent it from syncing.
Other parent rates (ADVPU, TPASS, etc.) will be set up as Excp/Fixed and will update to SynXis.
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