I am undergoing Salesforce trailhead challenges and got stuck on this one:
Create a validation rule to check that a contact is in the zip code of its account.
The challenge also has these conditions or guidelines:
- A contact with a MailingPostalCode that has an account and does not match the associated Account ShippingPostalCode should return with a validation error and not be saved.
- The validation rule should ONLY apply to contact records with an associated account. Contact records with no associated parent account can be added with any MailingPostalCode value. (Hint: you can use the ISBLANK function for this check)
Can somebody help me with this?
