To revoke a Section 18A Certificate click on the Section 18A button in the menu bar and click on the certificate number you would like to delete.
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Scroll down to the bottom of the page and click on “Revoke Certificate”
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Specify a reason for deleting the certificate and press the Revoke button.
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Once a certificate is revoked, a cancelled stamp is overlayed on it and the certificate number is displayed in red:
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