Beginning and Ending balances does not match in the report.

There are a lot of factors to check depending on how you've got everything set up. Does the report work for base entities? You can check a quickview (rather than a cube view) to ensure that the data in the database is correct based on the intersections you're viewing. That removes an erroneous cube view from being the issue. Beyond that, check your POV. If that's not it, then it could be a plethora of items including but not limited to member properties, cube view filter and/or properties, consolidation status, etc.