Build code is a code when vehicle was manufactured.........................Look in this link you will get some idea.........................
https://encrypted.google.com/search?q=peugeot+partner+build+code+location&source=lnms&tbm=isch&sa=X&ved=0CAcQ_AUoAWoVChMIwbGf75mzxwIVUSvbCh1kwwDS&biw=1280&bih=706#imgdii=IbiyYHvOjmZncM%3A%3BIbiyYHvOjmZncM%3A%3BKrrqGZb2VVkCDM%3A&imgrc=IbiyYHvOjmZncM%3A