function readOnly(count){ }
Starting November 20, the site will be set to read-only. On December 4, 2023,
forum discussions will move to the Trailblazer Community.
+ Start a Discussion
guestadmin Bhaktaguestadmin Bhakta 

Got this error in trail head.

when i m trying to complete my chalange regarding rollupsummary

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, Error mesage: []
 
Prashanth SamudralaPrashanth Samudrala
You get this error if, 

- There is a validation rule enable on your field (evident from the error message) 
- If a custom domain is enabled in your Dev org. In such a case, Trailhead will throw an error when validating the error message.

Cheers,
Prashanth
www.autorabit.com