Multiple items found when unique item of type "x" in integration object "y" is searched by its key

[nasesantosh]

I'm getting an error "Multiple items found when unique item of type 'Address' in integration object 'InboundB2BUnit' is searched by its key 'false|null'"

[VincenzoCar]

I've the same issue upgrating from 2211.20 to 2211.24

[Kiran333]

In commerce upgrade 2011.24 unique key for address in inboundB2BUnit and inboundB2BCustomer changed from publicKey to sapPublicKey. Please check your inbound objects and correct the unique keys, It should resolve the issue.