Using error messages

The transforms write error messages to these locations:

Trailer error page

The trailer error page is a page that the transforms add to the end of the output when a warning or data stream error occurs during the transform. The trailer error page contains warning and error messages from the transform to help you diagnose problems.

To print output without transform messages, you can suppress all messages on the trailer error page. Or, you can choose to suppress only transform warning messages. The transform always writes warning and error messages to the Infoprint Server common message log and the transform’s stderr file so that you can find messages even if the transform does not write a trailer error page.

You can use these methods to suppress messages on a trailer error page:

• Specify the Infoprint Server trailer-transform-error-page job attribute with the print request.
• Set the Trailer error page field to NO by using PIDU, the ISPF panel, or in the printer definition used to print the document.
• Set the AOP_TRAILER_ERROR_PAGE environment variable in the Infoprint Server transform configuration file, aopxfd.conf.

Infoprint Server common message log

The transforms write some warning and error messages to the Infoprint Server common message log if the common message log is enabled in Infoprint Server. For information about how to use the aoplogu command to see messages in the common message log, see z/OS Infoprint Server Operation and Administration.

Transform stderr file

The transform’s stderr file is a file that Infoprint Server administrators can access. In general, the transforms write messages in both the stderr file and the Infoprint Server common message log.

For some error conditions, the transforms write more detailed error messages to the stderr file when tracing is turned on. If you have trouble diagnosing a problem, you can turn tracing on and look for additional messages in the stderr file.