Hi,
I was doing the trailhead challenge on "Create SOQL Queries in Apex Classes"

Create a class
Name: AccountUtility
Create a method
Name: viewAnnualRevenue
Keywords: public, static, and void
Create a list
Name: accountsList
Create a query and assign the results to a list
Fields: Name and annual revenue (Hint: Use API names, not field names or labels)
Object: Account
Create a for loop that iterates through the query results
Object: Account
List name: accountsList
For each item, concatenate the account name, followed by a colon, followed by the account’s annual revenue: <account name> : <annual revenue>
Store the concatenated string in a variable named acctRev
Print the acctRev variable to the debug log:

I have written a code below:
public class AccountUtility {
    public static void viewAnnualRevenue (){
      List<Account> accountsList = [SELECT Name, AnnualRevenue FROM Account];
        for(Account acc: accountsList){
            //Looping the class through the query
            String name = '<Account Name>: ' + acc.Name +', <Annual Revenue> : ' + acc.AnnualRevenue;
            system.debug(name);
        }
    }

}

I am getting an error while passing the challenge "We can’t find the correct results format. Make sure that your concatenation puts each list item in this format: 'Account Name' : 'Account Revenue'."

Help would be appreciated.

Regards,
Atul Shendge

I am getting error message while solving this challenge in Trailhead :

To complete this challenge, add a validation rule which will block the insertion of a contact if the contact is related to an account and has a mailing postal code (which has the API Name MailingPostalCode) different from the account's shipping postal code (which has the API Name ShippingPostalCode).Name the validation rule 'Contact must be in Account ZIP Code'.
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 inserted.
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)

Error Message is :  There was an unhandled exception. Please reference ID: HKIZNLVZ. Error: Trailhead::TrailheadTimeOut. Message: Trailhead.view: failed to get a 200 response. Made 3 attempts each resulting in a 403 or 500 failure for url challenges?key=%5B%22trailhead.challenge.validation_rules.en.us.192%22%5D.

I am not sure what went wrong here.
My Validation Rule is on Contact Object  :

  AND ( NOT(ISBLANK( Account.Name)),
( MailingPostalCode <> Account.ShippingPostalCode))

Can anyone please help with this.

Hey community,

I'm struggling with the logic of the task...

To complete this challenge, add a validation rule which will block the insertion of a contact if the contact is related to an account and has a mailing postal code (which has the API Name MailingPostalCode) different from the account's shipping postal code (which has the API Name ShippingPostalCode).Name the validation rule 'Contact must be in Account ZIP Code'.

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 inserted.

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)

Here is what I got so far:

AND(
 NOT(ISBLANK(MailingPostalCode)),
 MailingPostalCode  <>  Account.ShippingPostalCode )

I THINK I know how to see if the contact mailing zip is not the same as the account shipping zip, and only if the is not blank.

The part I am stuck on is if the "Contact records with no associated parent account can be added with any MaiilingPostalCode value"...

I don't know what to do with that.

Also, I am now getting the error message when I recheck challenge:

Challenge not yet complete... here's what's wrong: 
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: FIELD_CUSTOM_VALIDATION_EXCEPTION, Contact_must_be_in_Account_ZIP_Code: [] 

Double help, please.