Is it possible to edit or delete a pending invoice (for a subscription which does not have auto collection method enabled)? This is needed because sometimes we need to offer an extra discount to a customer for whom the invoice was already raised earlier, but has not been paid yet. This may also be required in case we added a charge by mistake to the customer, which later needs to be removed.
It is not possible to edit an existing invoice. However, you may make it void and create another one.
To provide customer specific discounts, you could add credits to a customer that will be adjusted against the subsequent invoices. So to correct any mistakes you can use the credits feature.
For customers who are looking to edit / void an invoice we support it manually. We have not built the feature to edit it via ChargeBee yet.
More details here: http://support.chargebee.com/categories/1622/forums/116888/topics/26003