DFSMSdss attempted to dynamically allocate the indicated data set or volume and failed. error_code and information_code are returned by dynamic allocation and listed in the z/OS MVS Programming: Authorized Assembler Services Guide. Error code X'049C' can result if the volume is online and not mounted. An undocumented error code can be displayed if an installation-wide validation exit is used to deny allocations for dynamic allocation but fails to get the reason code returned by dynamic allocation. If any additional messages are returned by dynamic allocation, they will follow this message.
If the failure was for a volume, the task or volume is bypassed. If the failure was for a data set, the data set is bypassed. The return code is 8.
None.
Correct the problem indicated by the error and information codes listed in the z/OS MVS Programming: Authorized Assembler Services Guide.