A custom object lookup field not visible on visualforce page!

Question

I have created a custom object with a lookup field NewOwner__c. As per my requirement, I'm using this field in a visualforce case details page's popup to change the case owner. On the case details page(Visualforce), I have provided a custom button 'Change Owner'. When the case owner clicks on 'Change Owner' button, a popup should be displayed which contains an input field(NewOwner__c) that is a lookup to User object. The owner can then select the new owner from the lookup dialog and click change.

But the problem here is, this requirement is met when I view as an Admin. But when logged in as a different user(Case Owner profile), the lookup field is invisible as in second image.

I have checked all the security access. Case Owner profile has access to NewOwner__c(Field level security) and also given 'Read' and 'Edit' permissions in the permission set assigned to Case Owner profile.

I have attached the code below: -->

I'm unable to figure out a solution for this. Your assistance will be greatly appreciated.

Thanks in advance!

Answer 1

Check the Case Owner Profile and see if it has access to User object.

When using lookup fields, the user's Profile also need to have read access to the target object of that lookup field, in your case the User object.