Advanced prediction Driver issue

Hi All,

I’ve added a driver whose data is at the Beginning Balance (BegBalance) level. When I include another driver with data at the monthly level, the Advanced Prediction runs successfully.

However, when using only the single driver with BegBalance data, I encounter the following error:

"No. of future rows are not matching with Horizon for series: f3add6b4-efae-3321-b349-b3524e6d31b6"

Please let me know if you’ve seen this before or have any suggestions.