Errors, by their very nature, always occur in places where they should not occur. Consequently, we can only present a general approach here.

The figure Troubleshooting: Approach lists steps for a possible troubleshooting approach.
Isolate the problem area: First, attempt to isolate the error. Where did it occur, when did it occur, and in what context did it occur? If an end user in the SAP system complains, that their output could not be printed, the problem description would be too imprecise. "Front-end printing on front end xyz does not work with any SAP system" is more exact. If you also know that front-end printing works on other front ends, you have already isolated the problem.
Problem analysis: Check the scenario to find out whether all required settings, and so on, are correct. Check the application logs, the system log, and the traces (the developer traces will usually be helpful here) to see whether they provide any clues for correcting the error.
Gain additional knowledge: To interpret the results from the first problem analysis, it is, of course, necessary for you to be familiar with the processes and functions of the area in which the error has occurred. If your experience and previous knowledge are insufficient, you can search for SAP Notes on the SAP Support Portal with the keywords from the system log or the trace files. You may find a solution there, or additional information that helps you find and correct the error. If you do not find any suitable SAP Notes or search terms, search for composite SAP Notes for the topic area (for example, with the terms front-end printing and composite SAP Note). For additional background information about the topic area, see the online documentation and course materials. If you still cannot solve the problem with this information, compare the process with errors against an error-free process.
Compare error-free and erroneous processes: You can use this approach to determine where there are differences between an erroneous and an error-free process. This information helps you to further isolate the problem area and may help you to solve the problem or to perform new, more targeted problem analyses. If it is not possible to perform another problem analysis, contact the SAP Support by creating an incident. Enter the information from your troubleshooting (such as a trace and/or system log information) when doing so.
Note
You can use the support log assistant self-service tool for automated problem analysis of, for example, the configuration or log and trace files. The tool allows administrators to automatically analyze support-related files right from a browser. It uses the knowledge of SAP product support experts and connects known issues found in log, trace and other text-based files with solutions and troubleshooting steps.
For more information about the support log assistant tool, see SAP Note: 2838708ā Using the Support Log Assistant to automate support-related file analysis.