The follow the links:
https://tax.gov.ua/data/material/000/006/58768/Forms_servis_yur.htm,
https://tax.gov.ua/data/material/000/006/58768/Forms_servis_fiz.htm
contain forms that are used by the software RRO users for registration/re-registration/cancellation of registration of PRRO, as well as during the PRRO use are posted:
J/F1316605 Application for registration of software registrar of settlement operations. Form №1-PRRO;
J/F1316701 Notification of detection of malfunctions of software registrar of settlement operations. Form №2-PRRO;
J/F1316901 Notification on conduction of settlement operations during period of miscommunication between the software registrar of settlement operations and the fiscal server. Form №4-PRRO;
J/F 391802 Notification on provision of information regarding a qualified public key certificate (for notifications regarding public key certificates used in PRRO).