City wise Rates for Per diem expenses , for some countries

Summary:

We have a requirement to define per diem policy, with Country wise rates.

Within that, for some countries (Indonesia, Malaysia etc.) we need to sub differentiate based on the city or region

But if i enter multiple rows on spreadsheet with city and country combo, its still erroring as duplicate , how to proceed with this requirement? Kindly suggest

Content (required):

We have a requirement to define per diem policy, with Country wise rates.

Within that, for some countries (Indonesia, Malaysia etc.) we need to sub differentiate based on the city or region

But if i enter multiple rows on spreadsheet with city and country combo, its still erroring as duplicate , how to proceed with this requirement? Kindly suggest