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type | "CustomField" | string, Mandatory |
| locale | Null to operate on a segment level custom field. Otherwise, the language of the custom field. | string, Optional |
| id | The ID of the custom field. These are string CustomStr1 up to CustomStr30. To find out the ID of a custom field, log in to Wordbee Translator, go to "Settings" then "Custom fields" and edit the properties of a field. At the bottom of the popup you will find the corresponding ID. | string, Mandatory |
| value | The value to store in the custom field. Use null to clear the custom field. | string, Mandatory |
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