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Before deleting a sendable data extension that contains a large number of contact records, it is important to manage the contact deletion through Contact Builder. Deleting the data extension from Contact Builder ensures that all related contact information is also removed from the contact model.

In Salesforce Marketing Cloud, you can use either AMPscript or Server-Side JavaScript (SSJS) in email messages. Both languages are supported and can be used to manipulate data, create dynamic content, and perform other server-side operations.

To add and verify From Addresses in Marketing Cloud, you can use the following routes:

POST /messaging/v1/domainverification: This endpoint is used to verify a single domain.

POST /messaging/v1/domainverification/bulk/insert: This endpoint is used to verify multiple domains in bulk.

To dynamically create data extensions in Marketing Cloud, the developer should use the SOAP API using the Create method and the DataExtension object (A). This allows for the creation of data extensions with dynamic names and structures.

When creating relationships in Data Designer, it's essential to link the Contact ID to the Subscriber Key. The Contact ID in Marketing Cloud represents a unique identifier for contacts across various data sources, and linking it to the Subscriber Key ensures accurate data mapping and integration.

A File Drop Automation should be configured to handle files that arrive at varying times and have unique filenames. This type of automation triggers when a file is dropped into a specific folder on the Enhanced FTP site, allowing the system to handle imports as soon as the file arrives.

Synchronous REST API calls to Marketing Cloud have different timeout limits based on the type of operation:

300 seconds for tracking and data retrieve operations: These operations involve more extensive data processing, hence the higher timeout limit.

120 seconds for non-tracking operations: Standard non-tracking API calls have a shorter timeout limit.

To accurately identify subscribers who have unsubscribed from any of the child business units in an Enterprise 2.0 account, it is necessary to create data extracts of all subscribers within each child business unit. This approach ensures that unsubscribes specific to each business unit are captured.

Data Extracts: By creating data extracts within each child business unit, you can gather comprehensive unsubscribe data for all subscribers specific to each unit.

For pushing real-time updates to a data extension, the following API options are available:

Use the DataExtensionObject SOAP object (A) - This object allows you to perform various operations such as insert, update, and delete on data extensions through SOAP API calls.

Use the DataExtension SOAP object (C) - Similar to DataExtensionObject, this object provides capabilities to manage data extensions and their records via SOAP API.

These APIs allow for real-time interaction with data extensions, making them suitable for updating the product catalog.