I have to translate a technical document at work, but life is made difficult by people who "cheat" in the original. Case in point:
Versuchsnummer:- easy, "experiment number".
Then just after:
Experimentnummer:- well that would be...oh...bastids!

Without going into detail, they mean very different things in the context of the document.

Versuchsnummer maybe as "attempt number"? "test number?" "experimental number"?

No idea of the context...

I have no idea what they actually might mean, but I would understand the first as an attempt, the second as a finalized experiment. Can you take it up as such?