OmniStudio has introduced a new validation mechanism called ApexClassCheck, which enforces case-sensitive validation for Apex class references.
Due to this enhancement, Remote Actions or components referencing the Apex class discoveryfrmwrk.StoreResponses are failing with the following error message:
“User does not have permission to access ApexClass: discoveryfrmwrk.StoreResponses”
This issue occurs because the reference to the Apex class does not match the actual case-sensitive class name defined in Salesforce.
This validation has already been accounted for in code for 260+ releases. However, orgs with ApexClassCheck enabled may still encounter this issue in existing implementations, especially in sample or legacy OmniScripts that contain hardcoded references to the incorrectly cased class name.
Resolution Steps:
005227039

We use three kinds of cookies on our websites: required, functional, and advertising. You can choose whether functional and advertising cookies apply. Click on the different cookie categories to find out more about each category and to change the default settings.
Privacy Statement
Required cookies are necessary for basic website functionality. Some examples include: session cookies needed to transmit the website, authentication cookies, and security cookies.
Functional cookies enhance functions, performance, and services on the website. Some examples include: cookies used to analyze site traffic, cookies used for market research, and cookies used to display advertising that is not directed to a particular individual.
Advertising cookies track activity across websites in order to understand a viewer’s interests, and direct them specific marketing. Some examples include: cookies used for remarketing, or interest-based advertising.