Understanding Conveyance and Travel Allowances
It appears that there is some confusion between the two phrases. A salesperson may have to attend to a client within the same city. The means of transportation could be a bus, a 2-wheeler, a 4-wheeler, etc. When a salesperson claims the fare, it is called Conveyance Allowance as the commute is within the same city.
Travel Allowance for Outstation Visits
A salesperson might have to travel to an outstation to attend a client. For this, his/her travel could be by bus, rail, airplane, etc. The outstation visit may require staying at a hotel as well. Therefore, when a salesperson raises the claim, it will include travel as well as accommodation charges. This is known as Travel Allowance.