Product Variant Append media

[ErikBikeMan]

I am using this mutation on Graphql https://community.shopify.com/c/shopify-discussions/using-graphql-productvariantappendmedia-to-assoc... and I get a Product (Null) error.  I can't figure out what is causing this?

Here is what I am sending:

{

"data" : 

{

"query" : "mutation productVariantAppendMedia($productId: ID!, $variantMedia: [ProductVariantAppendMediaInput!]!) {     productVariantAppendMedia(productId: $productId, variantMedia: $variantMedia) {       product {         id       }     }   }",

"variables" : 

{

"productId" : "gid://shopify/Product/8732588671190",

"variantMedia" : 

[

{

"mediaIds" : [ "gid://shopify/MediaImage/36113475207382" ],

"variantId" : "gid://shopify/ProductVariant/46163774963926"

}

]

}

},

"headers" : 

{

"Content-Type" : "application/json",

"X-Shopify-Access-Token" : "access token"

},

"method" : "POST",

"url" : "myurl/admin/api/2024-04/graphql.json"

}

Error returned is:

"body":{"data":{"productVariantAppendMedia":{"product":null}},

The documentation references another permission that it needs, but I don't see that anywhere.