Why do I see duplicate errors on Billing validation?

Ppending billing data is validated for each billing cycle. Until all billing records have been linked successfully through a client identifier, the errors related to the pending billing records will be displayed for all the billing cycles validated. This is because Varibill does not yet know to which client the record belongs and therefore cannot identify the billing cycle of the client.

Read more on docs.varibill.com for more information on billing cycles.