What occurs when a customer links their Aadhaar number to multiple bank accounts and provides consent for seeding?

If a customer provides consent to link their Aadhaar number to multiple bank accounts, the bank that most recently updated the NPCI mapper will be the active one. Transactions will be routed to the bank that last seeded the Aadhaar number in the mapper.
Check Steps to to Link your Aadhaar Card to Bank Account?