The remove action allows you to remove unwanted keys or fields from an item being processed. It takes a list of keys as an argument, and removes those keys from the item.

Here’s an example of how you might use the remove action in a YAML file:

actions:
  remove_unwanted_fields:
    action: remove
    keys: [GROUP, TYPE, UID, ATTRIBUTE_CODE, DUMP_TIMESTAMP, MEASUREMENT_FAMILY]

This remove action will remove the keys GROUP, TYPE, UID, ATTRIBUTE_CODE, DUMP_TIMESTAMP, and MEASUREMENT_FAMILY from the item being processed.

Here’s an example of how the remove action might be used in a more complete processing pipeline:

actions:
  remove_unwanted_fields:
    action: remove
    keys: [GROUP, TYPE, UID, ATTRIBUTE_CODE, DUMP_TIMESTAMP, MEASUREMENT_FAMILY]
  rename_fields:
    action: rename
    mapping:
			OLD_FIELD_NAME: NEW_FIELD_NAME
			OLD_FIELD_NAME_2: NEW_FIELD_NAME_

In this example, the remove action is used first to remove unwanted fields from the item. Then, the add_timestamp action is used to add a new field called TIMESTAMP to the item, using the current date and time as the value. The rename action is used to rename specific fields in the item, and the convert_fields action is used to convert the data type of certain fields.