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The rename_keys processor renames keys in an event and is a mutate event processor. The following table describes the options you can use to configure the rename_keys processor.

Option Required Type Description
entries Yes List List of entries. Valid values are from_key, to_key, and overwrite_if_key_exists. Renaming occurs in the order defined.
from_key N/A N/A The key of the entry to be renamed.
to_key N/A N/A The new key of the entry.
overwrite_if_to_key_exists No Boolean If true, the existing value gets overwritten if to_key already exists in the event.
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