This article provides answers to FAQs about Developer Tools.

1. Q: Does Developer Tools support all Zuora charge models?
   A: You can use all charge models in the Product Catalog ​​​​​​and Orders API Loaders. However, you cannot override any of the charge field values in the Subscription or Amendment API Loader because of API limitations for the following charge models:
   • MultiAttributePricing
   • PreratedPerUnit
   • PreratedPricing
2. Q: What should I pay attention to when overriding product prices by importing a .csv file with the Subscription or Amendment API Loader?
   A: Ensure you have specified the following fields in the .csv file:

   Price type	Field
   flat-fee or per-unit	Charge.ID (or Charge.Name instead) Charge.ProductRatePlanChargeId Tier.Price
   tiered or volume	Charge.ID (or Charge.Name instead) Charge.ProductRatePlanChargeId Tier.Tier Tier.From Tier.To Tier.Price Tier.PriceFormat

   For more information about the required fields, see Template fields.