Resolve Master-Detail Relationship On Custom Report Types:
After you’ve replaced the deprecated field in your custom Reports, you can do the same for your custom Report Types.
Do not remove the deprecated EventApi__Event__c field from your custom Report Types before you remove the field from your custom Reports. You risk losing reference to how you used the field in the report. This reference will make the field change much easier and help keep the configuration of your reports.
Return to your custom Report Types in the tabs you kept open when you previously added the EventApi__Attendee_Event__c field.
On the Report Type, locate the Fields Available for Reports section and click Edit Layout.
On Field Layout Properties, locate the EventApi__Event__c field. It will show up as DEPRECATED.
Drag and drop the DEPRECATED field to the Fields Lookup window on the right-hand side to remove it.
Make sure Attendees Fields is selected as the View.
Click Save to save your changes.
Repeat these steps for all of your custom Report Types. Do not attempt these steps on Fonteva Report Types at this time. Fonteva Report Types and Reports will follow a different set of instructions on the following page.
Once you have reviewed your custom Report Types and Reports to replace the deprecated field, it’s time to take a look at Reports using Report Types from the Fonteva Reports package. Head to Updating Report Fields: Fonteva Reports to learn how.