During migration, there are 2 ways to populate the External ID for existing EDA objects:

• Method 1: Using Data Loader.
• Method 2: Run Script.

Method 1: Use Data Loader

Step 1: Export all records for existing EDA objects from production into a spreadsheet.

Step 2: Define the External ID for each record.

Step 3: During go live, load the spreadsheet to update the External ID in RIO's field.

Example: Export all current courses into a spreadsheet (with the record ID), and then define the External ID for each Course.

Method 2: Run Script

Step 1: Create a custom field for existing EDA objects in Production.

Step 2: Populate the External ID for each record in the custom field.

Step 3: During go live, run a script to copy the value from the custom field to RIO's External ID field.

Example: Create a custom field in the Course object, and then define the external ID.