The number of TCBs currently attached is either equal to or greater than the maximum number of TCBs allowed for the pool that is being reported on . Review the CICS System Initialization Table parameters MAXJVMTCBS, MAXOPEN TCBS, MAXSSLTCBS or MAXXPTCBS and increase the maximum that can be allocated alternatively you can change the values dynamically by using the CEMT SET DISPATCHER command.
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