Rejected

The backend refuses the stream as it is, for good, and nothing was committed: a value it cannot store (a decimal MongoDB cannot keep exactly, a \u0000 PostgreSQL's jsonb does not take), an identifier too long for its index. Appending it again is refused the same way, so it is neither retried nor read back; cause says why. In a group (EventLog.appendAll) it fails that stream alone.

Fields may be added: construct one with of; the constructor is internal to Wow.