I am currently in the Admin Intermediate Module trying to complete the Process Flow unit. I keep getting the following error "There was an unexpected error in your org which is preventing this assessment check from completing: System.DmlException: Insert failed. First exception on row 0; first error: REQUIRED_FIELD_MISSING, Required fields are missing: [MailingPostalCode__c, ShippingPostalCode__c]: [MailingPostalCode__c, ShippingPostalCode__c]". I have tried a variety of different attempts at a solution but cant seem to get this one fixed. Any help would be appreciated.  

I am currently in the Admin Intermediate Module trying to complete the Process Flow unit. I keep getting the following error "There was an unexpected error in your org which is preventing this assessment check from completing: System.DmlException: Insert failed. First exception on row 0; first error: REQUIRED_FIELD_MISSING, Required fields are missing: [MailingPostalCode__c, ShippingPostalCode__c]: [MailingPostalCode__c, ShippingPostalCode__c]". I have tried a variety of different attempts at a solution but cant seem to get this one fixed. Any help would be appreciated.  

 Make sure that the process is correct and that it is activated.
Create a process to update child record when the parent is updated.
You've been given a requirement to keep Contact addresses in sync with the Account they belong to. Use Process Builder to create a new process that updates all child Contact addresses when the address of the Account record is updated. This process:
Can have any name.
Must be activated.
Must update Contact mailing address fields (Street, City, State, Post Code, Country) when the parent Account shipping address field values are updated.
NOTE: You may have to deactivate the validation rule for the Contacts object (created from a previous challenge) in order to complete this challenge.