Causes of the dirty ownerships error

Summary:

Understand the causes of the error, then fixed with a Recompute Ownerships

Content (required):

Good morning,

yesterday the following error appeared in the FCCS application:

"Error Message: Consolidation cannot be performed for Periods: Jun. 

Dirty Ownership Data present for the period : Jun"

Up until that point users had consolidated the group without problems, then a country imported the monthly data (as it always does) and since then the consolidate has failed.

The imported data is the same as the data imported in previous periods, but I can't figure out what could have caused this block.

The situation was then resolved with a Recompute Ownership, but I'd like to avoid that happening again.