Sales Managers want to be automatically notified any time there is a change to an Opportunity Close Date and want these changes to be tracked on the…

The requirements are to track changes to the Opportunity Close Date on the record and to automatically notify Sales Managers.

1. Feed Tracking (A): Enabling Feed Tracking on the Opportunity object for the Close Date field will automatically create a Chatter post on the record's feed whenever the date is changed. If Sales Managers follow the Opportunity records, they will receive a notification about this post, fulfilling both the tracking and notification requirements.

2. Record-Triggered Flow (C): A record-triggered flow can be configured to execute when an Opportunity's Close Date is changed. This flow can use the "Post to Chatter" action to create a customized post on the record's feed, potentially @mentioning the Sales Manager or a specific group for a direct notification. This also satisfies both requirements.

B. Create an Opportunity outbound message: An outbound message sends data to an external system. It does not create internal notifications or track changes on the Salesforce record itself.

D. Activate Historical Trending for Opportunities: Historical Trending is used for reporting and analyzing data changes over time. It does not provide real-time notifications or track changes in a user-visible feed on the record.

1. Feed Tracking:

Salesforce Help, "Feed Tracking". This document states, "When you enable feed tracking for an object, users see posts about changes to records of that object type in their What I Follow feed... For record field changes, the feed post shows the user who made the change and the old and new values."

2. Record-Triggered Flow with Chatter Post Action:

Salesforce Help, "Flow Core Action: Post to Chatter". This document details the "Post to Chatter" action, explaining its capability to "post a message to a feed, group, or user," which can be triggered by a record change in a flow. The Target Name or ID can be set to the record's ID to post directly to its feed.

3. Historical Trending:

Salesforce Help, "Track Field History with Historical Trend Reporting". This resource clarifies the feature's purpose: "Historical trend reporting uses a special custom report type to track changes... so you can analyze changes over time." This confirms it is a reporting tool, not a notification mechanism.

4. Outbound Messages:

Salesforce Help, "Configure an Outbound Message Action". The documentation defines this action: "An outbound message sends information to a designated endpoint, such as an external service." This confirms its use for integration, not internal user alerts.