Question

A company has an existing custom object called Warranty Claim with 5,000 records already created. The administrator is asked to add a unique, sequential identifier to each claim, formatted like CLM-{00000}, so that future claims are automatically numbered and existing claims also receive numbers. What is the correct approach to meet this requirement?

Accepted Answer

Create an Auto Number field with the display format CLM-{00000}, and select the option to generate values for existing records when creating the field.

Answer

Create a Text field and manually type a unique value into each of the 5,000 existing records.

Answer

Create a Formula field that returns CLM- concatenated with the record's CreatedDate to guarantee uniqueness.

Answer

Create an Auto Number field, but understand that only records created after the field is added can ever be numbered.