post
https://{your-bynder-domain}/api/v4/media/save/
For metaproperties that use options (Select, Select2, Autocomplete), modifying an asset's metaproperty options should be done via option UUID's for the API to work optimally, sending name or label values will be deprecated in the future. Other metaproperties (Date, Text and Longtext), values can be submitted directly. Be aware that the endpoints described in Step 6 are an Either/Or choice. You should use either the Save as a new asset endpoint to save the uploaded file as a new asset, or the Update existing asset endpoint to update an existing asset with the uploaded file.