ANTM6997I

Explanation
The message is a response to the F ANTMAIN,PETINFO
command, and displays information about the System Data Mover (SDM)
pause element token table.
In the message text:aaaaa
Indicates the number of entries currently in use. 
bbbbb
Indicates the maximum number of entries allowed in the table.
ccccc
Indicates the high water mark for table usage.
yyyy.ddd hh:mm:ss
Indicates the local date and time when the HWM was reached.

System action
System processing continues.

System programmer response
If HWM indicates that the table entry
demand is reaching the table limit, you can increase the size of the
table. See z/OS DFSMS Advanced Copy Services for
instructions on modifying PET table size.

Source
DFSMS System Data Mover.