Oracle R12 Revaluations

Hello experts,

can someone please help me understand the revaluation process because i have created my own template and run the reval program and it works for new combinations of accounts but not for combinations that hav e run before.

i reverse the batch and the system recompiles the calculation but am unsure what the actual process is and how to make it work.

1 - if i run a reval and use end of month i cannot create another reval in the same month - if i have extra journals come in which were not accounted for before

2 tried useing the different dates to run but this fails,