Is it possible to disable the volume pricing on Amendment?

[goldwin]

we need a volumed pricing for new customer, but not for exisitng cusomer. Is it possible to disable the volume pricing on Amendment? 

[Andrew8ken]

You can’t change the charge model of a charge when creating or amending a subscription e.g. from per unit pricing to volume pricing.
Similarly, you can’t change the charge model of a charge in the product catalogue once the product is actively used in a subscription.
Perhaps create a clone of this rate plan for new customers and change the charge model?
Does this answer your question?