The GET macro obtains a record from an input data set. It operates in a logical-sequential and device-independent manner. The GET macro schedules the filling of input buffers, unblocks records, and directs input error recovery procedures. For spanned-record data sets, it also merges record segments into logical records.

After all records have been processed and the GET macro detects an end-of-data indication, the system automatically checks labels on sequential data sets and passes control to your end-of-data exit (EODAD) routine. If an end-of-volume condition is detected for a sequential data set, the system automatically switches volumes if the data set extends across several volumes, or if concatenated data sets are being processed.

If you specify OPTCD=Q in the DCB or DD statement, or if the LABEL parameter on the DD statement specifies ISO/ANSI labels, the GET macro converts input data from ASCII to EBCDIC. If CCSIDs are specified for ISO/ANSI V4 tapes, it converts input data from the CCSID of the data records on tape to the CCSID specified for the application program. This parameter is supported only for a magnetic tape that does not have IBM standard labels.