By Thyagaraju Adinarayan
LONDON (Reuters) - Trading in many European exchanges, including Frankfurt and Vienna, was interrupted on Wednesday morning due to a "technical issue" at German electronic trading platform Xetra, Deutsche Boerse (DE:DB1Gn) said.
The outage in the fully-electronic cash market trading system was affecting stock exchanges in Frankfurt, Vienna, Ljubljana, Prague, Budapest, Zagreb, Malta and Sofia as they use the Xetra T7 system, a Deutsche Boerse spokesman said.
The technical snag is a further blow to Deutsche Boerse, which saw one of its longest outages in April when the Frankfurt stock exchange was halted for more than four hours.
The Austrian blue-chip index (ATX) did not open at the scheduled opening time of 0700 GMT on Wednesday, while Germany's DAX (GDAXI) was stuck after a small number of trades went through at open, according to Refinitiv data.
The German stock exchange's cash markets generated a turnover of 159.8 billion euros ($179.5 billion) in May.
The Deutsche Boerse spokesman did not give an update on when the trading would restart.
"I just can confirm that there is a technical issue on Xetra ... we're currently investigating the failure," the spokesman, Patrick Kalbhenn, said.
Many key European bond and stocks futures were also affected by the issue.
($1 = 0.8905 euros)