winlogbeat issue with field names from windows defender

Windows Defender generates events with field names that contain spaces. Spaces in field names are problematic for indexing with Winlogbeat, causing messages like the following to appear:

Ignoring invalid or reserved key winlogbeat_winlog_event_data_Scan Trigger Index for message ae5313b0-0b2d-11f1-aa9d-dea415d79e2c
Ignoring invalid or reserved key winlogbeat_winlog_event_data_Scan Trigger for message ae5313b0-0b2d-11f1-aa9d-dea415d79e2c
Ignoring invalid or reserved key winlogbeat_winlog_event_data_Scan Type Index for message ae5313b0-0b2d-11f1-aa9d-dea415d79e2c
Ignoring invalid or reserved key winlogbeat_winlog_event_data_Scan Time Seconds for message 0690f382-0b2e-11f1-aa9d-dea415d79e2c
Ignoring invalid or reserved key winlogbeat_winlog_event_data_Product Name for message 0690f382-0b2e-11f1-aa9d-dea415d79e2c
Ignoring invalid or reserved key winlogbeat_winlog_event_data_Scan Time Hours for message 0690f382-0b2e-11f1-aa9d-dea415d79e2c

Root Cause:

Field names containing spaces are treated as invalid or reserved, causing the logs to be partially ignored or not indexed properly.

how can i configure winlogbeat to get the field names correctly without spaces? I want to change the " " Space to "_" to get it work.