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In support of Marriott’s overall integration plans for the Starwood Hotels & Resorts brands, all Starwood Amadeus chain codes have been changed for Master Chain Code searches.

Since August 30, 2018, all former Starwood (SPG) chain codes have migrated from their previous Master Chain Code, SW, to the Marriott Master Chain Code, EM.  With the exception of Bulgari Hotels & Resorts, all brands are now searchable under the EM Chain code.

This means that travel agents should use the EM Chain Code for all hotel searches, and make the relevant changes to any internal reporting platforms.