Hello,
i did some searches to find informations about the size limit of fact tables in SAP BPC 10 into this community site and i did not find any official answers.
In customer documentation (Sizing Guide, Document Version: 1.0 – 2015-07-21), scenarios are divided into 3 categories (small, medium and large) but the largest is set to 100M records. And next step is "Please contact SAP if your implementation does not fit these categories."
So here i am 
We have reach the 100M record "theorical limit" for one of our biggest fact table
Of course we could archive part of them, but assuming we do not have performances issue, we are wondering if it is wise to let it grow.
Can i have some official (or user exprience) feedback about the maximum data volume supported ? Known feedback or side effect ?
Best regards,
Arnaud