While doing a little research I went to the Swiss National Bank's website and downloaded their data on the Swiss balance of payments. The data is here: https://data.snb.ch/en/topics/aube#!/cube/bopovera
However the data on the SNB website does not sum to 0. [Using the sum current account +the capital account + financial account = 0 (BoP)] There's even a column in the data for the statistical difference but even including this there was no way that I could get the columns to balance.
I also looked on Trading Economics, it would also seem that there is no "balance" in the BoP. Switzerland would appear to be running a surplus in both accounts (see below). Ok Q1 2021 looks close. But I'd expect them to be mirror images of each other for every quarter.