Marketo Certified Expert Certification Practice Test

What approach would you take to prevent data from being overwritten in the phone number field during list uploads?

1. Make the field read-only

2. Block field updates to that field

3. Create a custom field for the phone number

4. Hide the field in the interface

The correct answer is: Block field updates to that field

The most effective approach to prevent data from being overwritten in the phone number field during list uploads is to block field updates to that field. By blocking updates, you allow data to remain intact without the risk of changes that can occur during an upload process. This means that even if the list you are uploading contains new phone numbers, they will not replace the existing numbers in the database, preserving the integrity of the data. Making the field read-only could prevent changes, but it does not address the context of data uploads specifically; it may not be practical depending upon how your data management processes are set up, leading to complications in data administration. Creating a custom field for the phone number is another option, but it complicates the database structure and may lead to confusion or mismanagement of data. Hiding the field in the interface does not prevent data overwrite during uploads and might actually lead to errors, as users might still inadvertently upload data that could overwrite existing records. Overall, blocking field updates directly addresses the issue of data integrity during uploads while maintaining a straightforward and manageable solution.