Leader/17 Code u:

Unknown [Not used]:

Level u is used when an institution receiving or sending data having a local code in Leader/17 cannot adequately determine the appropriate encoding level of the record. Code "u" replaces the local code. This code is used primarily by utilities for the tape-loading of records. The code is not to be used in records newly input or updated. Level is not used in CONSER records and, if found, must be replaced before the record is authenticated.