Symptoms:
CPF website rejected the file attached stating the reason that the summary does not tally with the sum of employees details.
Suggested workaround / solution(s):
The error message means that there is more number of staff under the employee details than in the summary. This usually happens when there is an FWL person included in the submission of CPF. Check through any new joiners that is an FWL but is ticked as Singaporean ( Personnel>Personal>Statutory)