DWW1720S The name of the original data set `dddd` plus the dsnextension `.xxxx` exceeds the maximum allowable length for a dataset name.

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The DSNEXTENSION keyword is specified but the name of the original dataset plus the length of the suffix exceeds the maximum allowed length of 44 characters for a data set name.

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Batch backout processing terminates.

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Remove the DSNEXTENSION keyword or correct the value in the keyword, then rerun the batch backout job.