MSIR.0892 Input error: input record number: (recnum), start position/length: (pos)/(len)

This message indicates that a FLOD statement that references the input buffer referenced data that was outside the current input buffer. This, almost certainly, indicates either a mistake in the FLOD/FILELOAD program, or corruption of the input dataset (TAPEI). As a first pass at diagnosing the problem, look at the indicated record in TAPEI to see if it appears reasonable.