Address book doesn't accept duplicate mail adresses in a Personal Address Book

[fmh_aigen]

I'm managing some tasks for a club and try to set up an address book for all the members. I found, that TB 128.4.2esr (64-Bit) silently ignores added members, like couples, who use the same mail address.
My only solution is to add another address entry addressing both of them. Not so nice.
Could you please think about issuing a warning if an address is not accepted ?

Thank you!

[Jon]

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