This could be because the Post Code is not in the format expected by the DfE. Valid formats for the DfE are as below (where ‘A’ is alphabetic and ‘n’ is numeric):
An nAA
Ann nAA
AAn nAA
AAnn nAA
AnA nAA
AAnA nAA
Also valid are:
BFPO n
BFPO nn
BFPO nnn
Sometimes it isn't immediately obvious when looking at the postcode on the front page of the student profile what is causing the error. Please click onto the cog next to address and edit to view the address in full.
If the postcode is entered in one of the formats above but you are still receiving an error do check for spaces before and after the postcode.
Once amended and saved the error should be removed.