SAP Message CB018 - Defined maximum number of messages reached. Note long text.

Diagnosis
More than &V1& messages exist for the selection criteria you haveentered. The maximum number entered for the messages to be selectedresults in only &V1& messages being selected.
V2 messages for process order v3 were contained in theses v1messages selected. More messages may, however, exist for this order buthave not been selected.

Procedure
Go back to the initial screen of the message monitor.
Make one of the following changes:
Enter further selection criteria to restrict the number of messagesselected to < &V1&.
Increase the maximum number of messages to be selected.
If you do so, bear in mind that this decreases system performance.
INCLUDE PI_PM_MON_MAXANZ OBJECT DOKU ID TX LANGUAGE EN