Branch will provide the event mapped in Event Config under Partner Management. This means there are two mappings in play:
The Branch event → SKAdNetwork conversion value mapping provided in the SKAdNetwork configuration tool.
The Branch event → Snap event name mapping provided in Event Config under Partner Management.
For example, if the Branch event COMPLETE_REGISTRATION is mapped to SKAN conversion value 10 and to Snap event SIGN_UP in the Branch dashboard, we will provide a mapping of conversion-value 10 → SIGN_UP to Snap via the Conversion Bit Schema API.