Onboarding, ICV, EGS Unit

We are currently using an ERP system that is integrated with the second phase of e-invoicing. The onboarding has been successfully completed, and invoices have been submitted through it.
We are planning to switch to a new ERP system in the near future.
Are we correct in understanding that:

  • A new EGS Unit must be created on the tax authority portal for the new system;
  • Onboarding must be performed from the new ERP for this Unit;
  • The ICV will reset and start from 1.

Is that correct?

We also have the following questions:

  • Can we continue the existing numbering sequence for our paper Tax Invoices?
  • Should the first invoice issued from the new ERP include the hash of the previous Tax Invoice sent from the new ERP system in its XML file?

Thank you in advance for your support.

Dear @mazzz,

Thank you for reaching out.

Regarding the below questions: -

  • A new EGS Unit must be created on the tax authority portal for the new system
  • Onboarding must be performed from the new ERP for this Unit
  • The ICV will reset and start from 1.

yes, all of them are correct

• Can we continue the existing numbering sequence for paper Tax Invoices?
Yes
• Should the first invoice from the new ERP include the hash of the last invoice from the previous ERP?
No, as the new ERP has a new EGS Unit. Hash chaining starts fresh with the new EGS, so the first invoice will have no previous invoice hash in its XML.

if you need any further question, do not hesitate to reach out