As per the Indian tax laws, taxability of any income is dependent upon the residential status of person and sources from where said income is earned. Residential status depends on the physical presence of a person in India during the said year and also past 10 years. So considering this, you need to firstly determine your residential status as per tax laws. If you happen to be resident in India your worldwide income is taxable in India. However, if you are non-resident or not-ordinarily resident, then only Indian sourced income is taxable.
Under the Income-tax Act, to understand the residential status, you need to read the Explanation under the main section 6 which has exceptions. Explanation to section 6(1) has clarified that if a citizen of India being an individual leaves India in any previous year for the purpose of employment outside India, the provision of sub-clause (c) shall apply as if the 60 days period has been substituted for 182 days.
In short, when a person goes abroad for work he would be resident if he stays in India for more than 182 days in India and 365 days in past 4 years. This is only applicable to the year in which the person departs. You will not get this benefit in the year of return. You must ensure that you stay less than 60 days in India during 2019-20 and your stay in India is less than 365 days in last 4 years (setion 6(1) of the Income-tax Act).
To accurately determine your residential status, you need to check your physical presence in India during the last 10 years based on your passport. Let me know if you need any assistance to determine your residential status such that taxability is determined.