I have a some VW instructions for replacing the injector pump belt, idler and tensioner which states (referring to the tensioner)...

31. Ensure tab (B on diagram) engages in the cutout.

What cutout?

Where?

There is no cutout that I can see.

The cam belt tensioner is located by a pin but I can't see how the pump belt tensioner is located as there appears to be no cutout whatever that is?