When you undertook to do the Proof-of-Concept, you offered to provide the Brazanians with a list of functions that could and should be demonstrated to prove how well the system would work in practice. They refused to accept your advice, preferring to set their own parameters which in fact proved and tested very little. What is more, they failed completely to provide the data you needed to make the POC really meaningful, and so what you ended up with was a bit of a pig’s breakfast. Lots of bells and whistles, but very little real demonstration of what the system could actually do. The 12% non-performance was all due to the absence of data in the agreed format from their side, or obvious conflicts, duplications and errors in the data they supplied. When you gave the undertaking that these problems could be fixed after customisation, you expected them to understand that part of the customisation process would be the systematisation and standardisation of the data that they supplied you with.