Because the sync function uses each member’s email address to match up their accounts in Planning Center and Jovo, if these addresses do not match (or if the address is absent in Planning Center), you may end up with duplicate members. 

If you have access to edit the “People” application for your organisation, Planning Center has tools you can use to find and merge duplicate entries.

Otherwise, you can remove duplicates in one of two ways: 

• If you’ve added an existing group member within Jovo, you simply delete their “old” Planning Center profile and keep the updated entry from Jovo that includes their correct email address. However, please note that this method will also delete any historical attendance data for that member. 
• Alternatively, if you don’t want to lose your member’s previous attendance data, you can simply copy the correct email address from the “new” member profile (activated through Jovo) into the existing member’s profile, then delete the newer entry. This will keep the sync function intact without removing existing data on file for that group member.