Responces
| Code | Error code | Response/error message |
| 200 | - | (successful request) |
| 200 | NO_OBJECT_FOUND | “no object with the given fiscal id found” |
| 200 | NO_CERT_FOUND | “certificate not found” |
| 200 | WRONG_DATE_TIME | "incorrect date and time of operation" |
| 200 | WRONG_DATE_TIME_FOR_LAST_INV | "the date and time is less than the last invoice time" |
| 200 | WRONG_OPERATION | "the ‘oper’ field should be either ‘invoice’ or ‘invoice_cor’" |
| 200 | MISSING_PARENT_FISCAL_NUM | "missing ‘parentFiscalNum’ field" |
| 200 | OTHER | Other errors |