Can we use AccountNumber field in Account object as an External ID? Would upsert work with AccountNumber field? Any suggestions please.
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1 Answer
Just tried THIS: in the dev console
Account a = New Account(Name='test', AccountNumber='1234');
upsert a accountNumber;
and got this message:
Invalid field for upsert, must be an External Id custom or standard indexed field: accountNumber
So I guess the answer is NO.
