The above modules let you send registered sales data messages to the EET system (Electronic registration of sales) or generate a Taxpayer's Signature Code (PKP) during a tax administrator server outage when it is not possible to record the sale online.
For correct use of the EET modules, you need to have a special certificate and private key (in PEM format) provided by the Ministry of Finance. These keys can be obtained at a local Tax office or through your data box. You will receive them within 3-7 days. When you create a scenario, enter these key in the settings of the module using the keychain. After you save the certificate and the private key, you can create scenarios with the EET modules.