Create metadata field for an existing product graphql

[jason90]

I have a mutation query I am working on for to create or update a metadata field into an already existing product. Here is the structure of the query:

mutation {Product1: productUpdate(
    input: {
        id: "existing product id",
        metafields: {
            id: "existing metafield id"
            namespace: "some namespace",
            key:"some key",
            value:"some value"
        }
    }) 
    {
        product {
            id
            title
            metafields(first: 10) {
                edges {
                    node {
                        id
                        key
                        value
                        namespace
                    }
                }
            }
        }
    }
}

The query works if the metadata id already exists, however it doesn't create a new metadata field if I remove the id key from the metadata portion of the query (the response returns no metadata fields). The productCreate mutation doesn't seem to accomplish what I want either.

If we aren't able to create new metadata fields in this way, how can go about doing that?

[jason90]

For some additional context, I have a request id done using my test store: 8628ca25-6209-4420-abde-75fb372b925b. I am using the api version 2020-01.

[jason90 · Accepted solution]

I managed to resolve my own issue: turns out all I needed to do was include the valueType key in the metadata parameters and its working fine.