Oracle Message ORA-22926 - specified trim length is greater than current LOB values length

ERRORspecified trim length is greater than current LOB values length
CAUSEThe input length for which to trim the LOB value to is greater than the current length of the LOB value.
ACTIONMay not need to trim the LOB value because its already smaller than the trim length specified. Or, if trimming the LOB value really is required, use a smaller trim length.