Problem with identical siblings

[Flybridge]

I have designed a cube and the lowest level of a dimension is a concatenation of code and description. If I process the cube with just the code as the leaf it runs OK. But if I process the cube with the code + description as the leaf I get an error message complaining about duplicate siblings.

That doesn't seem logical. Has anyone any experience of this? In particular, any experience of fixing this?

Thanks,

Flybridge


'The world isn't round - it's bent!' Spike Milligan