I wanted to change the default currency from USD to ETB and i used
Setup-> Setting → Global Setting
but while saving i get an error saying
Error: Document has been modified after you have opened it (2019-06-12 12:08:34.150491, 2019-06-12 12:08:34.150491). Please refresh to get the latest document.
and i refreshed it but still i get the same error message why is it?