The emulation takes an hour to boot, is usually occupied by someone else, and a clean edge case such as “five hundred handling units jammed at once” cannot be triggered there anyway. What is left: assembling telegrams by hand in SE16, hoping the format is right, and on failure not knowing whether the bug sits in the code or in the test.
That is the reality in almost every MFS project. Tests get avoided because they are laborious. Edge cases are discovered when they blow up in production. CI/CD barely happens because the setup is too complicated.
TeleForge lowers the friction. Telegram templates, scenarios, sequences, pass/fail, automatable. Testing becomes standard practice rather than an act of heroism.