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TMC Record Access

TMC volume, DSNB and control records can be accessed when the following information is supplied:

Volume record

Defines the volume serial number or cataloged data set name.

DSNB record

Defines the DSNB number or cataloged data set name.

Control record

Defines the control record identifier.

When inquiring by cataloged data set name, the TMC volume record for that data set is displayed if it is the first file. The DSNB record is displayed for the data set if it is a secondary file.

All fields of a volume or DSNB record are displayed and are available for subsequent updating, except the scratch bit field, which cannot be modified. When an inquiry is performed on a multivolume data set or multi-data set volume, a list of secondary volume or DSNB records can optionally be displayed. Control records can only be displayed; updating is not permitted.