457 visa applicants with an occupation that has been removed from the STSOL
One option seems like a withdrawal of application with refund of fees.
457 visa applicants that had lodged their application on or before 18 April 2017, and whose application had not yet been decided, with an occupation that has been removed from the STSOL, may be eligible for a refund of their visa application fee.
Nominating businesses for these applications may also be eligible for a refund of related fees
Source:
PDF File at: https://www.border.gov.au/WorkinginAustralia/Documents/abolition-replacement-457.pdf