Diagnosis
On &v1& you changed from rate category &v2& (that bills with dynamicperiod control from basic category estimation of meter readingresults in billing) to rate category &v3&. There must be meterreading results in the database for the new rate category at the startand end of the billing period. However, no meter reading results existin the database for the last billing order with rate category &v2&.

System Response
Processing is canceled.

Procedure
Enter meter reading results for the last billing order before the ratechange.