Run External Application 

If a type C test case calls an External application type test case, it always runs in the foreground. When running the test case, a dialog box appears that tells you how to proceed.

If there is a long text containing test instructions for the external application test case, choose Long text in the dialog box to display it.

After performing all external test case steps, choose Continue in the R/3 system dialog box. The test case runs as described in Run test case.