SAP Message 60798 - Assigned no. & is last no. in no. range &. Next no. is &

The automatic assignment of new meter Nos. is with the No. range objectFVVI_ZAEHL in the named No. range interval. The No. assigned is thelast one available in this No. range interval. System Response The system assigns the first number entered in the No. range intervalas the next number. Procedure If a No. is assigned that already exists in the system, errors occur.Due to this you must contact your system administrator and clarify howto proceed further or see if the No. range interval can be extended.