If individual customer:
- Contract of Services in two copies (Terms and General Conditions), signed in original by the legal representative or his authorized representatives;
- Notarized declaration (one copy in original);
- Copy ID of the person holding the certificate (User);
- Copy PO related to the payment in advance of the contract value;
- Copy Member Carnet of CECCAR (Body of Expert Accountants and Certified Accountants)/APEC (Professional Association of Economists and Accountants) (if applicable);
- Other supporting documents, if applicable.

If the customer legal person:
- Contract of Services in two copies, signed in original by the legal representative or his authorized representatives;
- Terms and General Conditions in two copies signed in original by the legal representative or his authorized representatives;
- Notarized declaration (one copy in original);
- Copy ID of the person holding the certificate (User);
- Copy PO related to the payment in advance of the contract value;
- Copy Member Carnet of CECCAR (Body of Expert Accountants and Certified Accountants)/APEC (Professional Association of Economists and Accountants) (if applicable);
- Other supporting documents, if applicable.