Salesforce Certified Platform App Builder — Question 179

Which statement is true about an External ID field? (Choose two.)

Answer options

• A. The field contains unique record identifiers from a system outside of Salesforce.
• B. The field must be unique since duplicates are not allowed within Salesforce.
• C. The field must contain at least one number and at least one letter.
• D. The field can be unique based on case-sensitive or case-insensitive values.

Correct answer: A, D

Explanation

Option A is correct because an External ID field is specifically designed to store unique identifiers from external systems. Option D is also correct as External ID fields can be configured to be unique while considering case sensitivity. Options B and C are incorrect; while External IDs must be unique, they do not have to meet the criteria of containing both letters and numbers.