Quick answer: Import validation flags likely duplicates before commit, so you decide merge-or-create with full context. Post-launch, the phone number acts as the natural unique key — one number, one member.
How it works
Duplicates typically enter through historical lists; the flag report catches them at the border.
Same person with two numbers? Keep one record; the second number can live in a custom field.
The audit log traces any merge decision if questions come later.
Frequently asked questions
Can two members share a family phone?
One number maps to one sign-in identity — give the second member their own number or email.
What about same-name members?
Names never key identity; numbers and member IDs do.