Retained earning Prior getting doubled in FCCS

Summary:

Hi Experts,

We are facing a problem with one of the client, where our retained earnings prior at most of the levels are calculated properly. But when it rolls up to a certain parent entity(total geography) it is getting doubled.

Things that we have checked so far

1. No validation error and no metadata definition error
2. Ownership is 100% subsidiaries everywhere.
3. Contribution numbers are good
4. No issue in any other account(just RE prior)
5. No rule has been written(just simple consolidation), and also no configurable console rules has been deployed
6. Enhanced Org by period is enabled and the application is DSO.