Using API / Subprogram USR4101N

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# Using API / Subprogram USR4101N

With this subprogram you can perform the follwing tasks:

- Check whether Xref data for a specified programming object in a given FDIC exists

This section covers the following topics:

- Calling the Subprogram

## Calling the Subprogram

Enter command `SYSEXT` at the Natural prompt. This command invokes the library SYSEXT, which contains various Natural user exits. The following is provided for each user exit:

- a user exit subprogram (in object form)

- a sample program (in source form) of how to invoke the subprogram

- a text member explaining the function of the user exit.

A screen similar to the one below will appear. Page to subprogram USR4101N if necessary.

    15:30:21              ***** NATURAL SYSEXT UTILITY *****             2007-05-31
    User HNO                            - Menu -                   Library SYSEXT

    Cmd  Source    Interface  Comment                                          Prod
     _   USR4007P  USR4007N   Get/set current value of parameter SYNERR         NAT
     _   USR4008P  USR4008N   Set library for RPC execution                     RPC
     _   USR4009P  USR4009N   Set parameters for EntireX                        RPC
     _   USR4010P  USR4010N   Retrieve runtime settings of server               RPC
     _   USR4011P  USR4011N   Create A20 hash value for variable input          NAT
     _   USR4012P  USR4012N   Support of application error                      RPC
     _   USR4025P  USR4025N   Handle multiple steplibs  in NSC                  NAT
     _   USR4101P  USR4101N   Check existence of PRD Xref data                  PRD

Enter a question mark in the Cmd column to display a list of possible actions. Enter D in this column to display a description of this subprogram.