User creation succeeds without a username

Hi,

We using the Custom Username Generation plugin point provided in OIM 11gR2PS3 to generate a unique username(usr_login) in OIM and across target systems. In our system we are facing an issue that during bulk user creation reconciliation events, the user creation succeeds even before the username is calculated for the users. This results in failure of provisioning to various target systems. I suppose the plugin point works as a pre-process orch event and thus user creation should follow after the successful execution of this plugin, however, this doesn't seem to be happening.

Wish to know if anyone faced an issue similar to this and if yes, how to mitigate it.