CFDTPOOL

 If you have a task waiting on resource type CFDTPOOL, the task is waiting for a free slot within the "maximum requests" limit to become available. CICS places a limit on the number of requests that a region can have running simultaneously in a coupling facility data tables server. This limit is known as the "maxreqs" limit, and it avoids overloading the coupling facility. If the number of requests currently running in the server for a CICS region has reached the maxreqs limit, a request waits until one of the other requests completes.

Waiting on this resource can occur only for a file defined to access a coupling facility data table.