Have you checked the plot number? If the plot number is showing you need to move the customer in and send a commitment to DQPS to update the account.
Have you checked the MSN if you are able to find the account and again shows as plot number move the customer in and send to DQPS to update the account.
Have you checked the Royal mail and have you obtained the UPRN numbe?
You need to take headcount, full address, plot number, MSN, number of bedrooms, developer name, start read, move in read, UPRN number and send a commitment offshore to move the customer in.