Thank you, but I manually import the CSV file and only use the API for exporting products. I retrieve all the information related to the products and save it on my local server in a CSV file. Once the CSV file is created, I manually import it into my store or another store. Could you please clarify if I can export metafields, both with and without definitions, using the REST API? If it’s possible, how can I achieve this? Because the REST API response does not seem to include custom created metafields, whether they have definitions or not.