An error occurred while copying ownership data to next year

We created alternate hierarchy in the FCCS application, we need the data from previous period also to be rolled up to the current period, so we unlocked the hierarchies that are needed. Unlocked entities in the main hierarchy that are shared in the alternate hierarchy. Performed Db Refresh, and also performed synchronization through manage approvals, however while copying Ownership data to next year we are receiving below error-

An error occurred while copying ownership data to next year.

Please let us know if anyone faced this error before.