Dear WT
Here I found some information about Sri Lnakan travel visa
Sri Lanka tourist visa is required
for citizens of Mauritius.
Citizens of Mauritius residing in Mauritius must apply for a visa to Sri Lanka in person at the nearest consulate of Sri Lanka in Mauritius. Please note, application procedures and fees may vary by location. If there is no consulate of Sri Lanka in Mauritius there may be a consulate of Sri Lanka in a neighboring country that covers the jurisdiction of Mauritius.
While we cannot process your travel visa request, travelers should take note of the following advice:
# Check the current validity of your passport
For international travel, all travelers will need a passport, valid for at least 90 days following your departure date. However, we strongly recommend traveling with six months validity on your passport at all times.
It is also recommended that your valid passport have at least two un-used pages remaining, for any necessary entry and exit stamps that may be issued. It is also a good idea to review the number of pages and validity remaining your passport well in advance of overseas travel. This will allow for time needed if a replacement passport may be required.
# Use our Embassy Guide
Here you can look up embassy and consular contact information. Our comprehensive database of worldwide embassy address and contact details can help you locate the nearest embassy to seek country-specific guidance pertaining to travel regulations.
I'll find more details and inform to you OK..
Regards
Suresh