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Dawid NawrotDawid Nawrot 

Developer Beginner - SOQL Challenge - fields do not exist

SOQL Challenge asks for the following: 

The method searches for contacts that have a last name matching the first string and a mailing postal code (API name: MailingPostalCode) matching the second. It gets the ID and Name of those contacts and returns them.

But the contact object doesn't have neither LastName nor MailingPostalCode fields, and it doesn't help to create them and add "__c". I'm using fresh playground as it was suggested at the beginning of Developer Beginner trail.
Amit Chaudhary 8Amit Chaudhary 8
can you please post your code