Earlier, the Oman series were scheduled for March but they were postponed owing to the Covid-19 pandemic.
The bottom four will compete in the World Cup Qualifiers playoff set to take place in Zimbabwe in June and July of 2023.
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The temperature is expected to range between 19 and 27 degrees Celsius.
The date of the Tri-Series is yet to be confirmed officially by the International Cricket Council.
Oman lead the standings winning eight of the 10 matches played.