diff --git a/src/openapi/products/productreference-crud.yaml b/src/openapi/products/productreference-crud.yaml
index 55ac58c..6e8841c 100644
--- a/src/openapi/products/productreference-crud.yaml
+++ b/src/openapi/products/productreference-crud.yaml
@@ -1814,7 +1814,7 @@ components:
         - mandatoryCustomerDataItemId: 5
           customerDataItem: address
         - mandatoryCustomerDataItemId: 6
-          customerDataItem: phone
+          customerDataItem: voucher
         - mandatoryCustomerDataItemId: 7
           customerDataItem: ovPayToken
         - mandatoryCustomerDataItemId: 8