"Auckland Council in early February inspected two businesses in Meadowland [in Somerville, east Auckland] that had previously been given D grades," said Mervyn Chetty, manager environmental health, Auckland Council.
"Unfortunately D grade certificates were sent to these businesses in error, as our system was not updated with the new grades in time."
Chetty said replacement certificates with the correct grades were sent out to the restaurants as soon as the council was made aware of this error.
"We apologise to the businesses for our error and we will be taking steps to minimise the chance of this happening again in the future," added Chetty.
Businesses which have been given a D rating would be re-inspected within two months of the grading.