Reason:
This informational message tells you that dynamic extend has ended. In the message text, variables are as follows:
The ddname is the name that is used in the JCL.
The atc n field is the after tracks or cylinders. It is CYL and the count of cylinders only if the DYNAMIC_EXTEND_MSGS option is set to CYL and the number of tracks is "round." Otherwise, it is TRK and the count of tracks.
For DASD data sets being extended, the volser is the VOLSER used for this extend. In z/VSE the VOLSER might be known, but if unknown it is set as blanks.
If a VIRTUAL area is being extended, this field contains blanks.
For DASD data sets being extended, the VOL n is the volume count of this volume within the data set.
If a VIRTUAL area is being extended, this field always shows the volume count as the number of dynamic extends for the area.
For DASD data sets being extended, the VOLS n in z/OS is the number of volumes and candidate volumes that are currently set for this DASD data set. Volumes after the current one are expected to have space but are not required to have space. In z/VSE, there is no catalog, and therefore the number is always the same as the VOL value.
If a VIRTUAL area is being extended, this field always shows the total volumes count as the maximum number of dynamic extends allowed.
For DASD data sets being extended, the EXT n is the number of extents now on the volume where this extent went.
If a VIRTUAL area is being extended, the extent count is always specified as 1.
The +tc n field is the added tracks or cylinders. The field is CYL and the count of cylinders is given only if the DYNAMIC_EXTEND_MSGS option is set to CYL, and the number of tracks is "round." Otherwise, the field is TRK, and a count of tracks is given.
Action:
None. This message is for information only.
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