What is the fine-grained topic of the following text: KPMG sacked its South African leadership in September 2017 after it found work done for companies owned by the Gupta family, accused by a public watchdog of improperly influencing government contracts, “fell considerably short” of its standards. Only return the topic.
KPMG's dismissal of its South African leadership due to improper work for the Gupta family's companies.