Oh dear, it seems that Sage has stumbled over iXBRL. This is a classic opportunity for a competition to squeeze in and take advantage. It is a classic business tactic and can make people a fortune and establish a reputation. Somehow I reckon that the sheer reach of Sage will make this unlikely but not impossible over a longer period if events unfold in an unfavourable manner to Sage and they slip up again. That’s the trouble with software – even if it ain’t quite up to scratch it is usually too much hassle to migrate even if the competitors make it “easy” to do so. Especially where cautious accountants are involved.