Specify a processing program

What causes this issue?

You have not specified the program that you want to use for processing
the objects of the selected mimetype.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Enter a program name, for example, notepad.exe, if you want to edit
an HTML document.

Error message extract from SAP system. Copyright SAP SE.