Error when syncing phone and computer

[99ha66]

What can I do if there is a double card registration? As I understand it, this is due to the synchronization of the computer and the phone. But I don't understand what to do about it, manual cleaning is definitely not an option.

Who uses a computer and a phone at the same time have you had similar problems?
If this happens with 100+ cards, it will take hours to manually clean.