Uploading an image to custom fields and not show as product image using rest api

[inuar]

I am trying to add a file definition to a custom field, then I need to upload an image that I will only use for a specific purpose and I do not want to show this image on Products page.

I managed to get something closer to it, I upload the image to 

$response = $api->rest("POST", "/admin/products/123/images.json", $imagePayload);

then I get the response and save into custom field 

$response = $api->rest('POST', '/admin/products/123/metafields.json', [
    "metafield" => [
        "namespace" => "product",
        "key" => "description_image",
        "value" => trim($image['src']),
        "type" => "url"
    ]
]);

The issue is that this shows the image on the products page along with other images. 

[ThePixelEdge]

Hello @inuarYour requirement entails custom development, which necessitates paid services. Please inform us if you are open to discussing this further.