When it comes to creating size charts through POST HTTP requests, it's important to understand the limitations and explore alternative solutions.

Creating size charts through POST HTTP requests is not a typical approach. Size charts are often static resources, meaning they are pre-defined and do not change frequently. As such, they are typically incorporated into the website's code or content management system during the development phase.

Size charts are more commonly managed through the Kiwi app without the need for HTTP requests.

Instead of attempting to create size charts through POST HTTP requests, you have a few options to create size charts: manual creation, uploading via CSV/Google Sheets, or syncing from a different Shopify store.

By using these different options, you'll be able to create size charts without using unusual methods like POST HTTP requests. If you need any help, please don't hesitate to contact us.