Issuing API calls

Before you begin

Before you can write TSO Client API calls from your application program, you must be running in a TSO environment and calling the API functions from a REXX™ exec. To review a sample program that demonstrates the use of various API functions, see Sample TSO Client API program.
Note: Refer to the TSO/E REXX™ User's Guide for information on REXX™ programming standards and procedures.

About this task

To perform the API function calls, select the function you want to call and add REXX™ commands.

Procedure

Use the following procedure to configure your calling exec:
  1. Assign values to your parameters: 
    parameter = value
  2. Issue the API call. 
    rccresult = function_name(parm1,parm2,parm3...)
    The returned data from the call is placed in rccresult, delimited by spaces.
  3. Parse rccresult into the variables rccret, rccrsn, and rccmsgtext
    Parse Var rccresult rccret rccrsn rccmsgtext