ArticlesPSA: Error: "Web service callout failed: Unable to parse callout response. Apex type not found for element allowGuestPaymentsApi"

Feature Console > PSA Direct for Jira> Create a site and configure settings to enable the connection between Jira with PSA > Perform

Step 2. Create Certinia Integration Site: Error: "Web service callout failed: Unable to parse callout response. Apex type not found for element allowGuestPaymentsApi"

• To have reached this error, most of the step is complete. All that is needed to do is update the profile for the guest user to add a single Apex class
• Add the Apex class 'psaj__IHCJ_RestHandler' to Profile labeled "Certinia Integration Profile". Should allow
• Once completed, you can move on to the next step (this step does not have to succeed on the Feature Console - as long as the class is added to the profile)

• Use Dev Console and use below query for Feature Console Step Record:
• Select Id, fferpcore__TargetId__c, fferpcore__Status__c, fferpcore__Enabled__c from fferpcore__FeatureConsoleActivation__c WHERE fferpcore__Enabled__c = false
  
• Look for 'step.psaj___CreateConfigureSite' and change fferpcore__Status__c to 'Success' and fferpcore__Enabled__c to 'True'
• Verify Feature Console and close Dev Console once complete