Creating an Access Key field for Custom Objects

Follow these steps to create an access key field for your custom object(s):

1. Click Setup and select the Object Manager.
2. Select the Custom Object in which the Access Key field will be created.
3. Click Fields & Relationships.
4. Click New button.
5. Select Text datatype and click Next.
6. Enter the following details for the new field:
   • Field Label: Access Key
   • Length: 255
   • Field Name: Access_Key
   • Unique: True 
   • Select Radio button Treat "ABC" and "abc" as duplicate values (case insensitive)
7. Click Next.
8. Select the Visible checkbox for the required profiles.
9. Unselect all the layouts.
10. Click Save.