# Marketing Cloud Connect viability, sync and troubleshooting

*Marketing Cloud Engagement Consultant Study Guide · Integration · Last updated November 3, 2026 · https://www.certifyforce.com/study-guide/marketing-cloud-engagement-consultant/integration/marketing-cloud-connect-viability-sync-and-troubleshooting*

Whether a customer can run Marketing Cloud Connect (editions, Classic, Government Cloud, multi-org), how keys, users and tracking settings decide what reaches CRM records, and how to keep Synchronized Data Sources and Salesforce Data entry sources working through changes.

- Certification: Salesforce Marketing Cloud Engagement Consultant
- Exam section: Integration
- Study guide: https://www.certifyforce.com/study-guide/marketing-cloud-engagement-consultant

**Official exam objective:**

> Given a customer use case, demonstrate knowledge of features, viability, and troubleshooting of Marketing Cloud Connect.

## What the exam expects

- Judge whether a customer can run Marketing Cloud Connect: CRM edition, Lightning Experience, Government Cloud and multi-org prerequisites.
- Recommend keys, user licences and tracking settings so sends and tracking land on the right CRM records.
- Plan package upgrades, troubleshooting and a disconnect without breaking journeys or queries.
- Diagnose Synchronized Data Sources problems: missing objects or fields, shifted dates, stale formulas, schema changes.
- Explain what limits a Salesforce Data entry source.
- Key terms: **Salesforce system user** (the CRM-side API user of the connection); **Marketing Cloud Connect API user** (the Engagement-side API user); **integrated user** (licensed in both clouds, accounts linked); **synchronized data extension** (the Engagement copy of a synced CRM object); **multi-org** (business units connecting to orgs independently).

## Key facts

| Fact | Detail | Source |
|---|---|---|
| CRM editions | Unlimited, Enterprise, Performance, Developer Edition Sandbox; not Professional | [Connect Clouds](https://help.salesforce.com/s/articleView?id=mktg.mc_co_connect_the_clouds.htm&type=5&language=en_US) |
| Lightning Experience | Users are redirected to Classic from Marketing Cloud Connect tabs | [Marketing Cloud Connect](https://help.salesforce.com/s/articleView?id=mktg.mc_co_marketing_cloud_connect.htm&type=5&language=en_US) |
| Multi-org prerequisites | Enterprise 2.0, Connected App Authentication, Custom Profile Centers; no Government Cloud | [Multi-Org Configuration](https://help.salesforce.com/s/articleView?id=mktg.mc_co_multi_org_account_configuration.htm&type=5&language=en_US) |
| Business units per system user | Up to 5 | [Multi-Org Configuration](https://help.salesforce.com/s/articleView?id=mktg.mc_co_multi_org_account_configuration.htm&type=5&language=en_US) |
| Subscriber key for tracking | 18-digit Contact, Lead or User ID | [Subscriber Key](https://help.salesforce.com/s/articleView?id=mktg.mc_co_subscriber_key.htm&type=5&language=en_US) |
| Package upgrades | Sandboxes get the newest version; production follows a release later | [Marketing Cloud Connect](https://help.salesforce.com/s/articleView?id=mktg.mc_co_marketing_cloud_connect.htm&type=5&language=en_US) |
| Package API logging | Retired with the 234.0 package release | [Initiate Logging](https://help.salesforce.com/s/articleView?id=mktg.mc_co_initiate_log.htm&type=5&language=en_US) |
| Synced dates | Stored in US Central Standard Time | [SDS in Contact Builder](https://help.salesforce.com/s/articleView?id=mktg.mc_cab_data_integration_for_your_account_with_synchronized_data_sources.htm&type=5&language=en_US) |
| Objects per refresh cycle | Six at a time | [SDS in Contact Builder](https://help.salesforce.com/s/articleView?id=mktg.mc_cab_data_integration_for_your_account_with_synchronized_data_sources.htm&type=5&language=en_US) |
| Pause limit | Longer than 15 days requires a refresh | [SDS Best Practices](https://help.salesforce.com/s/articleView?id=mktg.mc_co_implement_synchronized_data_sources_best_practices.htm&type=5&language=en_US) |
| Automatic refresh | More than 600,000 rows changed in a minute | [SDS Best Practices](https://help.salesforce.com/s/articleView?id=mktg.mc_co_implement_synchronized_data_sources_best_practices.htm&type=5&language=en_US) |
| Flow invocations | Less than 2,000 per save transaction | [Salesforce Data Event](https://help.salesforce.com/s/articleView?id=mktg.mc_jb_salesforce_data_event.htm&type=5&language=en_US) |

## Check yourself

- Why might an admin be unable to edit a Salesforce entry source even in a draft journey?
- Why pause a CRM object in Engagement before deleting it in the CRM?
- When the connected CRM org changes, what should happen to existing journeys and Salesforce events?
- Which tracking frequency and tracking window does the troubleshooting guide recommend?

## Sources

- [Marketing Cloud Connect](https://help.salesforce.com/s/articleView?id=mktg.mc_co_marketing_cloud_connect.htm&type=5&language=en_US)
- [Connect Clouds with Marketing Cloud Connect](https://help.salesforce.com/s/articleView?id=mktg.mc_co_connect_the_clouds.htm&type=5&language=en_US)
- [Account, Edition, and Other Compatibility FAQs](https://help.salesforce.com/s/articleView?id=mktg.mc_co_account_edition_compatibility_faqs.htm&type=5&language=en_US)
- [Multi-Org Account Configuration in Marketing Cloud Connect](https://help.salesforce.com/s/articleView?id=mktg.mc_co_multi_org_account_configuration.htm&type=5&language=en_US)
- [Subscriber Key (Marketing Cloud Connect)](https://help.salesforce.com/s/articleView?id=mktg.mc_co_subscriber_key.htm&type=5&language=en_US)
- [Guide to Marketing Cloud Connect Setup (Trailhead)](https://trailhead.salesforce.com/content/learn/modules/marketing-cloud-connect/get-started-with-mc-connect)
- [Finish Marketing Cloud Connect Configuration (Trailhead)](https://trailhead.salesforce.com/content/learn/modules/marketing-cloud-connect/finish-mc-connect-configuration)
- [Initiate Logging](https://help.salesforce.com/s/articleView?id=mktg.mc_co_initiate_log.htm&type=5&language=en_US)
- [Troubleshoot Email Sends and Tracking in Marketing Cloud Connect](https://help.salesforce.com/s/articleView?id=mktg.mc_co_troubleshoot_email_sends_and_tracking.htm&type=5&language=en_US)
- [Impacts of disconnecting and reconnecting Marketing Cloud](https://help.salesforce.com/s/articleView?id=001300391&language=en_US&type=1)
- [Synchronized Data Sources in Contact Builder](https://help.salesforce.com/s/articleView?id=mktg.mc_cab_data_integration_for_your_account_with_synchronized_data_sources.htm&type=5&language=en_US)
- [Synchronized Data Sources Best Practices](https://help.salesforce.com/s/articleView?id=mktg.mc_co_implement_synchronized_data_sources_best_practices.htm&type=5&language=en_US)
- [Salesforce Objects are not included in setup for Synchronized Data Sources](https://help.salesforce.com/s/articleView?id=000383249&language=en_US&type=1)
- [Missing required fields for objects within Synchronized Data Sources](https://help.salesforce.com/s/articleView?id=000381070&language=en_US&type=1)
- [The Salesforce Data Event](https://help.salesforce.com/s/articleView?id=mktg.mc_jb_salesforce_data_event.htm&type=5&language=en_US)

## About the full unit

The "Core concepts", "Exam traps" and "Worked scenario" sections of this unit, its 24 linked practice questions, and unlimited timed mock exams are included with the Marketing Cloud Engagement Consultant pack (USD $19): https://www.certifyforce.com/practice-exams