The Shanghai Stock Exchange will test after the transaction is delayed

China’s Shanghai Stock Exchange will run tests on its auction and various other platforms on Sunday, the state-run Securities Times reported on Saturday, a day after an unexplained transaction delay.

Friday’s delay in trading on the benchmark Shanghai Composite Index coincided with a Chinese stock rally that followed official announcements of monetary, liquidity and fiscal stimulus this week.

All market participants can take part in Sunday’s test, which will try to identify problems in processing a large number of orders during the auction process, the report said. The test will simulate a normal day’s trading and clearing.

A Shanghai stock exchange official confirmed that notices about the test had been sent to brokerages and some other market participants, but was not ready to share them with Reuters. (Reporting by Joe Cash and Shanghai Newsroom; Editing by Helen Popper)