Code review comment for lp:~akretion-team/banking-addons/bank-statement-reconcile-61-ref-base-completion

I would expect .value to work in 283, but not in 286. But wouldn't you be better off to use the string representation for both? Then you don't need to know anything about the exception's internals and that's just the idea for the rule that exceptions should have a meaningful string representation. (ErrorTooManyPartner does that)