Github user ilgrosso commented on the issue:
https://github.com/apache/syncope/pull/70
> That way replace won't work since it saves first (2 tokens exist.violate
UNIQUE constraint) and deletes next. That way it will only delete the existing
one which results in no token at all.
You are right, but as you can see, in the [current
implementation](https://github.com/apache/syncope/blob/master/core/provisioning-java/src/main/java/org/apache/syncope/core/provisioning/java/data/AccessTokenDataBinderImpl.java#L138-L142)
save and delete do not happen under the same conditions.
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