chassis no what year is it

i am trying to find out what year my series 3 was made. i have been onto the calVIN website to find out but no luck. it does not recognise the number. i have typed it in the same as it is on the plate. waht can i do???. my chassis number is 9012269A.
i no that 901 means series3 swb but what do the others mean??
please help

The chassis number dose not give the year, try this

The Heritage Motor Centre - Heritage Certificate