We can't find the field 'Backup_Agent__c' on the Case object. #create lookup filters

@Parvathi Kollipara

•  ensure that the value of 'Field Label' and 'Field Name' is set to 'Backup_Agent__c,' and then follow the instructions as provided in Trailhead. I hope this will resolve the issue. 
• Make sure the API_name created as per module instructions
• Please make sure you are checking the challenge in correct org.

Please check the below similar thread:

• https://trailhead.salesforce.com/trailblazer-community/feed/0D54V00007T46N1SAJ