After adding an Event speaker to an Event Management, it shows the following error:
An Account, Contact, or User must be selected to save a record.
This error is due to the validation rule Attendee_Selection_vod on the Event Attendee object.
The Validation Rule condition does not include the EM_Attendee_vod__c and EM_Event_Speaker_vod objects:
AND(LEN( Account_vod_c ) < 1,LEN( Contact_vod_c ) < 1,LEN( User_vod_c ) < 1)
This is a known Org configuration issue. EM_Attendee_vod__c and EM_Event_Speaker_vod need to be added into the Validation rule condition.
Update the Validation rule condition as shown below:
AND(LEN( Account_vod_c ) < 1,LEN( Contact_vod_c ) < 1,LEN( User_vod_c ) < 1,LEN(EM_Attendee_vod_c) < 1,LEN(EM_Event_Speaker_vod_c) < 1)