Hyperswitch field-name is activity-level, cassandra field-name is activity_level.
2 possible solutions I (Joal) think of:
- Drop/recreate/reload cassandra table - Allows to have the same field-name for cassandra-backend and hyperswitch - easier to maintain
- Make hyperswitch do the conversion between external field-name and internal field name. More error prone on JS side.
I (Joal) suggest doing 1 as data is very small.