AHL089I
TOO MANY GTF OUTPUT DATA SETS - DDNAME ddname WILL NOT BE USED.

Explanation

The JCL for the generalized trace facility (GTF) contains DD statements for more than 16 output data sets, but GTF can use only 16.

In the message text:
ddname
The ddname.

System action

GTF continues, but it will not use the data set with the ddname.

Operator response

Record this message and notify the system programmer.

System programmer response

Remove the excess data sets from the JCL for GTF.

Source

Generalized trace facility (GTF)

Module

AHLGTFI2