IQC6200I THE NUMBER OF RECORDS IN THE [LMSG | SMSG | QBLK] DATA SET HAS EXCEEDED THE UPPER THRESHOLD.

Explanation
 The number of records in the data set that is indicated by value of LMSG, SMSG, or QBLK in the
message text, has exceeded the upper threshold that you set. LMSG is the large message queue data
set. SMSG is the short message queue data set. QBLK is the queue blocks data set. This message is
displayed when the upper threshold (CD) that you defined is crossed.
 Messages might be queuing excessively for one of the following reasons: 
One or more transactions that have stopped IMS
programs

One or more terminals is stopped or not signed on, such as a printer

A terminal destination that was not defined to the system is causing messages to be inserted to
an invalid destination

Either an executing transaction or an intelligent input device is looping and inserting
messages

There might not be enough IMS queue space
                        allocated for the current workload

System action
 Processing continues.

User response
 You might want to reduce the queue usage and avoid a possible shutdown. To determine the effect
of this action, examine the percentage of use that is displayed by the /DIS POOL
command.
 Check
the console to see if any IQC6000 series messages have been issued
indicating that an action has been taken to alleviate the condition.
This would include starting jobs that would unload part or all of
the current committed messages on the queue.
 Determine if enough dependent regions are available to handle the workload. 
 Determine if any programs are stopped that should not be stopped. Change the threshold
percentages with the QCF TSO Client, define jobs to perform unloads of messages, or change area
actions to prevent the system from terminating because of insufficient queue space.

Module
 IQCQMRI0