---
id: gk-gravityexport-save-feed-copy-unknown-key
title: "Filter - gk/gravityexport/save/feed-copy/unknown-key"
sidebar_label: "gk/gravityexport/save/feed-copy/unknown-key"
tags:
  - "1.15.0"
---

# Filter: gk/gravityexport/save/feed-copy/unknown-key

Decides what happens to a feed meta key the copier does not recognize.

## Parameters

| Name | Type | Description |
|------|------|-------------|
| $action | `string` | The action to take. Default: 'copy'. Accepts 'copy' or 'drop'. |
| $key | `string` | The unrecognized meta key. |
| $value | `mixed` | The value stored under the key. |
| $source_meta | `array` | The full source feed meta. |
| $target_form_id | `int` | The target form ID. |

### Since

- 1.15.0

### Source

Defined in `add-ons/save/src/Feature/FeedCopy/CopyNormalizer.php` at line 337