Input variables for function. Error: input.variables: Variable definitions are missing.

[fabiof4011]

I'm trying to use a variable in my input query for a shipping customisation function.

I've followed the steps here https://shopify.dev/docs/apps/functions/input-output/variables-queries

But I'm getting the following error

Validation errors 
 • input.variables: Variable definitions are missing. Ensure you have defined them in your extension
 configuration and that you are using a supported CLI version. See documentation for details:
  https://shopify.dev/api/functions/input-query-variables 

My shopify cli is at the latest available version (3.50.1)

My extensions/my-delivery-customisation/shopify.extension.toml file looks like this

api_version = "2023-10"
[[extensions]]
handle = "my-delivery-customization"
name = "t:name"
description = "t:description"
type = "function"

[[extensions.targeting]]
target = "purchase.delivery-customization.run"
input_query = "src/run.graphql"
export = "run"

[extensions.build]
command = ""
path = "dist/function.wasm"

[extensions.ui.paths]
create = "/"
details = "/"

[input.variables]
namespace = "$app:my-delivery-function"
key = "shipping-config"

My query looks like this

query RunInput($freeTags: [String!]) {
    cart{
        buyerIdentity {
            email
            customer{
                isVIP: hasAnyTag(tags: $freeTags)
            }
        }
        deliveryGroups {
            deliveryOptions {
                title
                handle
            }
        }
    }
}

I have created a json metafield with that key and that namespace.

Thank you for your help

[fabiof4011 · Accepted solution]

Ok the problem was that (differently from what the documentation says) the right syntax is this:

[extensions.input.variables]
namespace = "$app:my-delivery-function"
key = "shipping-config"

[Nick_Wesselman]

Thanks for posting the solution -- we indeed have a doc update in the works for this.

[rishika_286]

I am also doing the same thing but after writing this 
[extensions.input.variables]
namespace = "payment-customization"
key = "function-configuration"

metafield giving Null, I am stucked to solve this issue.

[fabiof4011]

Are you using the $app prefix? Try to not use that and see if it works.

[rishika_286]

No, I am not using $app (reserved prefix) for this.

[Nick_Wesselman]

When you say 'metafield giving null', are you getting the "Variable Definitions Are Missing" error, or is the metafield coming back null in your input query?

These are two different but related uses of metafields in Functions.

https://shopify.dev/docs/apps/functions/input-output/queries-metafields

https://shopify.dev/docs/apps/functions/input-output/variables-queries

[rishika_286]

Yes, in input query it's giving null. Getting this response

[Nick_Wesselman]

I responded in your other thread.