Canceling a submitted PF claim online isn't directly possible, but you can inform the EPFO of your intent. Head to the EPFO grievance portal, log in, and under "Category", choose "PF Withdrawal." Clearly state your cancellation request in the description box, mentioning the claim reference number (if available). Submit the grievance, and the EPFO will process it, potentially contacting you for further details. The processing time can vary, so keep a copy of the submitted form for reference