Reason:
SVC 99 is the MVS SVC used to dynamically allocate either data sets or volumes to an executing job task. The CADisk request for this service has failed. CADisk interprets many of the common error and information codes and prints a meaningful description of the error. However, the less common codes must be found in the IBM guides System Programming Library: Application Development Guide, Job Management Guide, or the System Macros Facilities Guide before corrective action is taken.
Action:
If the error code returned in the message is 1708 and the CADisk function being executed is implicit VSAM, review your input commands. If more than one archive or delete command is specified for a given catalog, the cluster may have been archived or deleted by a previous command. This can be verified by the archive report. If the data set shows up more than once in the report, and one of the entries has no asterisk by the data set name, then the data set was scratched by the first command. The second archive attempt results in the allocation error because the data set no longer exists on DASD. In this case, the message can be ignored.
Similarly, during MERGE or IXMAINT, if the error code is 0 and info code is 0038, CADisk is attempting to scratch a data set that no longer exists on DASD. This situation can occur only in rare instances and should be assumed to be all right and the message ignored. Possibility of an instance can be when a data set is cataloged to two volumes but only exists on one. When CADisk attempts to scratch the second segment, this error condition is detected. More information can be found in the IBM System Messages Guide, message IEF285I, if wanted.
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