A logical error was discovered in the track data after it had been read into the buffer and before writing it to DASD. The length of the track data does not match the sum of the count, key, and data fields of all records on the track in the buffer. This problem can arise if the track was not reconstructed correctly by DFSMSdss during the RESTORE or if the track was not written correctly during the DUMP or, similarly, during a COPY.