LIB/TSO provides default data set name processing that lets you add and retrieve modules using corresponding names. For this processing to work correctly, TSO data sets that are added to a master file or that hold modules being retrieved must have names that adhere to naming conventions. A TSO data set name consists of three fields:
The fields must be separated by periods. The total length of the data set name must not exceed 44 characters, including the periods. If all three fields are specified, the name is referred to as a fully qualified data set name.
The user-prefix can be either the prefix the PROFILE command specified or the user ID. Your site determines which. The user-prefix is the leftmost field of a fully qualified data set name.
The user-supplied name, or middle level name, is one- to eight-alphanumeric or national characters long, beginning with an alphabetic or national character. The characters hyphen (-) and ampersand-zero (12-0 punch) are not accepted in a TSO data set name.
You must always specify the user-supplied name. However, depending on current defaults and requirements, you can omit the user-prefix and descriptive-qualifiers when referencing a TSO data set in a command, allowing LIB/ISPF-TSO to generate these values. At times, you might have to specify a fully qualified name.
The descriptive-qualifier is the rightmost field of a fully qualified data set name. For default name processing to work properly, the descriptive-qualifier of the TSO data set must match the CA Librarian module type. This is either the TYPE option specified with the command, the language code stored with the module as a result of the last LANG or TYPE option specified, or the site module type default.
For partitioned data sets, the name of the member is enclosed in parentheses at the end of the data set name. Member names can be up to eight characters long. The same character restrictions that apply to sequential data set names apply to member names.
Member names are not counted in the 44 character length limit of the partitioned data set name.
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