An official summary sheet or reasonable facsimile with a signed contest participation declaration is required with all entries. Please make sure that UTC is used. Please see there. All band changes have to be clearly indicated. The log must be accompanied by a summary sheet, and check sheet for multipliers.
Duplicate contacts have to be clearly marked in the log.
If more than 100 stations have been worked on a band a separate check sheet for duplicate contacts is obligatory. Each German station may be counted once in SSB and once in CW on each band.