# What steps should I follow to ensure the Sync Flag is set to TRUE when a Guest Record is updated in MEWS?

> In Thynk’s Sliced Bread Rules, update the rule that processes Mews guest records so it sets the SFMC Sync Flag to TRUE on create or update, then test and confirm the Salesforce contact reflects it.

Source: https://faq.thynk.cloud/platform/what-steps-should-i-follow-to-ensure-the-sync-flag-is-set-to-true-when-a-guest-record-is-updated-in-
Updated: 2025-11-10
Publisher: Thynk
Category: Platform

Thynk is a Salesforce-native hospitality commercial platform for hotel and venue sales, catering, events and MICE.

## Full answer

To ensure the Sync Flag (SFMC) is set to TRUE upon updating a Guest Record in MEWS, access the Sliced Bread Rules configuration in Thynk.cloud. Locate the rule that processes Guest Records from MEWS and modify it to include logic that sets the Sync Flag (SFMC) to TRUE whenever a Guest Record is created or updated. After making these changes, test by creating or updating a Guest Record in MEWS and verify the corresponding Contact record in Salesforce reflects this update.

## Related

- [More Platform answers](https://faq.thynk.cloud/platform)
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