For a user input error, use this procedure to assist in correcting the error:

1. Look up the command and its attributes (or parameters), the attributes in the attributes data set, and the entries in the exports data set in this book or the appropriate client machine command documentation.
2. Examine the attributes (or parameters) specified by each command, specified in the attributes data set, and the DIRECTORY entries specified in the exports data set to verify that they are specified correctly. Check the z/OS NFS server log data set, the z/OS NFS client log data set, or both log data sets to find the error message if applicable.
3. If you find a user input error, reenter the command or restart the server after you correct the error.
4. If all attributes (or parameters) and directory statements appear to be specified correctly, you should use this topic to build a set of keywords that describe the error, and then contact IBM® for help.

After determining that the suspected failure is neither a z/OS® TCP/IP program error nor a user error, you need to develop a set of keywords that describe the program failure. A keyword is an agreed-upon word or abbreviation used to describe a single aspect of a program failure.

After you have selected a set of keywords, use the set to search IBMLink/Service to determine whether an authorized program analysis report (APAR) has already been recorded for the failure. The IBMLink/Service online database contains information about the resolution of APARs. If a program failure is identified in these databases with the same set of keywords, the search yields a description of the problem and usually a fix. If the failure is not known, use the keywords to describe the failure when you contact IBM for help, which is the final step before an APAR is generated. For more information about these services see z/OS DFSMSdfp Diagnosis.