GraphQL: discountCodeBxgyCreate mutation, invalid value for error

[obihan]

I am trying to use discountCodeBxgyCreate mutation and I am using the following structure;

              customerGets {
                value {
                  ... on DiscountOnQuantity {
                    effect {
                      ... on DiscountPercentage {
                        percentage
                      }
                      ... on DiscountAmount {
                        amount {
                          amount
                          currencyCode
                        }
                        appliesOnEachItem
                      }
                    }
                    quantity {
                      quantity
                    }
                  }
                }

and the following variables;

{
     discountOnQuantity: 
          {
          quantity: "1010", 
          effect: {
               amount: "50.00"
          }
     }
}

which is the same one Shopify itself uses when you try to create the same discount on standard Shopify discounts. However, I get the following error:

Error: Variable $bxgyCodeDiscount of type DiscountCodeBxgyInput! was provided invalid value for customerGets.value.discountOnQuantity.effect.amount (Field is not defined on DiscountEffectInput)

However, the documentation claims that DiscountEffect's possible types are DiscountAmount and DiscountPercentage.

[Liam · Accepted solution]

It sounds like there's a mismatch between your GraphQL mutation structure and the expected input for the `discountCodeBxgyCreate` mutation in the Shopify Admin API.

Here's would you can try:

• Define the Discount Effect: The effect field should be properly structured to reflect either a percentage or an amount. In your case, you want to use DiscountAmount.
• Correctly Structure the Variables: Ensure that the variables you pass match the expected structure of the DiscountCodeBxgyInput type.
• Use the Correct Types: GraphQL is strictly typed. Make sure that numerical values are not passed as strings unless the field is explicitly a string type.

Hope this helps,